Vue--vue-Router

一.vue路由的基本使用

为什么需要路由?

因为我们通过component切换组件无法给组件传递参数

component切换组件

1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4 <meta charset="UTF-8">
 5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 7 <title>Document</title>   
 8 <script src="../vue2.4.4.js"></script>
 9 </head>
10 
11 <body>
12 <!-- 定义一个vue的管理区块，（MVVM中的View） -->
13 <template id="account">
14     <div>
15         <a href="#" @click="componentId='login'">登录</a>
16         <a href="#" @click="componentId='register'">注册</a>
17         <!-- :is 相当于给component绑定组件，绑定is后面的值对应的组件 -->
18         <component :is="componentId"></component>
19 </div>
20 </template>
21 <div id="app">
22     <account></account>
23 </div>
24 </body>
25 <script>
26     Vue.component("account",{
27         template:"#account",
28         // 在父组件中添加一个componentId的属性，将来给上面模板中的component使用
29         data:function() {
30             return {
31                 componentId:"login"
32             }
33         },
34         // methods:{
35         //     register:function() {
36         //         this.componentId = "register";
37         //     }
38         // },
39         components:{
40             "login":{
41                 template:"<span>login</span>"
42             },
43             "register":{
44                 template:"<span>register</span>"
45             }
46         }
47     });
48     // 实例化vue对象（MVVM中的View Model）
49     new Vue({
50         // vm控制的区块为id为app的div，此div中的所有vue指令均可以被vm解析
51         el:'#app',
52         data:{
53         // 数据 （MVVM中的Model）   
54         },
55         methods:{
56         }
57     })
58 </script>
59 </html>

View Code

使用vue路由需要vue-router.js

/**
* vue-router v3.0.1
* (c) 2017 Evan You
* @license MIT
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global.VueRouter = factory());
}(this, (function () { 'use strict';

/* */

function assert (condition, message) {
if (!condition) {
throw new Error(("[vue-router] " + message))
}
}

function warn (condition, message) {
if ("development" !== 'production' && !condition) {
typeof console !== 'undefined' && console.warn(("[vue-router] " + message));
}
}

function isError (err) {
return Object.prototype.toString.call(err).indexOf('Error') > -1
}

var View = {
name: 'router-view',
functional: true,
props: {
name: {
type: String,
default: 'default'
}
},
render: function render (_, ref) {
var props = ref.props;
var children = ref.children;
var parent = ref.parent;
var data = ref.data;

data.routerView = true;

// directly use parent context's createElement() function
// so that components rendered by router-view can resolve named slots
var h = parent.$createElement;
var name = props.name;
var route = parent.$route;
var cache = parent._routerViewCache || (parent._routerViewCache = {});

// determine current view depth, also check to see if the tree
// has been toggled inactive but kept-alive.
var depth = 0;
var inactive = false;
while (parent && parent._routerRoot !== parent) {
if (parent.$vnode && parent.$vnode.data.routerView) {
depth++;
}
if (parent._inactive) {
inactive = true;
}
parent = parent.$parent;
}
data.routerViewDepth = depth;

// render previous view if the tree is inactive and kept-alive
if (inactive) {
return h(cache[name], data, children)
}

var matched = route.matched[depth];
// render empty node if no matched route
if (!matched) {
cache[name] = null;
return h()
}

var component = cache[name] = matched.components[name];

// attach instance registration hook
// this will be called in the instance's injected lifecycle hooks
data.registerRouteInstance = function (vm, val) {
// val could be undefined for unregistration
var current = matched.instances[name];
if (
(val && current !== vm) ||
(!val && current === vm)
) {
matched.instances[name] = val;
}
}

// also register instance in prepatch hook
// in case the same component instance is reused across different routes
;(data.hook || (data.hook = {})).prepatch = function (_, vnode) {
matched.instances[name] = vnode.componentInstance;
};

// resolve props
var propsToPass = data.props = resolveProps(route, matched.props && matched.props[name]);
if (propsToPass) {
// clone to prevent mutation
propsToPass = data.props = extend({}, propsToPass);
// pass non-declared props as attrs
var attrs = data.attrs = data.attrs || {};
for (var key in propsToPass) {
if (!component.props || !(key in component.props)) {
attrs[key] = propsToPass[key];
delete propsToPass[key];
}
}
}

return h(component, data, children)
}
};

function resolveProps (route, config) {
switch (typeof config) {
case 'undefined':
return
case 'object':
return config
case 'function':
return config(route)
case 'boolean':
return config ? route.params : undefined
default:
{
warn(
false,
"props in \"" + (route.path) + "\" is a " + (typeof config) + ", " +
"expecting an object, function or boolean."
);
}
}
}

function extend (to, from) {
for (var key in from) {
to[key] = from[key];
}
return to
}

/* */

var encodeReserveRE = /[!'()*]/g;
var encodeReserveReplacer = function (c) { return '%' + c.charCodeAt(0).toString(16); };
var commaRE = /%2C/g;

// fixed encodeURIComponent which is more conformant to RFC3986:
// - escapes [!'()*]
// - preserve commas
var encode = function (str) { return encodeURIComponent(str)
.replace(encodeReserveRE, encodeReserveReplacer)
.replace(commaRE, ','); };

var decode = decodeURIComponent;

function resolveQuery (
query,
extraQuery,
_parseQuery
) {
if ( extraQuery === void 0 ) extraQuery = {};

var parse = _parseQuery || parseQuery;
var parsedQuery;
try {
parsedQuery = parse(query || '');
} catch (e) {
"development" !== 'production' && warn(false, e.message);
parsedQuery = {};
}
for (var key in extraQuery) {
parsedQuery[key] = extraQuery[key];
}
return parsedQuery
}

function parseQuery (query) {
var res = {};

query = query.trim().replace(/^(\?|#|&)/, '');

if (!query) {
return res
}

query.split('&').forEach(function (param) {
var parts = param.replace(/\+/g, ' ').split('=');
var key = decode(parts.shift());
var val = parts.length > 0
? decode(parts.join('='))
: null;

if (res[key] === undefined) {
res[key] = val;
} else if (Array.isArray(res[key])) {
res[key].push(val);
} else {
res[key] = [res[key], val];
}
});

return res
}

function stringifyQuery (obj) {
var res = obj ? Object.keys(obj).map(function (key) {
var val = obj[key];

if (val === undefined) {
return ''
}

if (val === null) {
return encode(key)
}

if (Array.isArray(val)) {
var result = [];
val.forEach(function (val2) {
if (val2 === undefined) {
return
}
if (val2 === null) {
result.push(encode(key));
} else {
result.push(encode(key) + '=' + encode(val2));
}
});
return result.join('&')
}

return encode(key) + '=' + encode(val)
}).filter(function (x) { return x.length > 0; }).join('&') : null;
return res ? ("?" + res) : ''
}

/* */


var trailingSlashRE = /\/?$/;

function createRoute (
record,
location,
redirectedFrom,
router
) {
var stringifyQuery$$1 = router && router.options.stringifyQuery;

var query = location.query || {};
try {
query = clone(query);
} catch (e) {}

var route = {
name: location.name || (record && record.name),
meta: (record && record.meta) || {},
path: location.path || '/',
hash: location.hash || '',
query: query,
params: location.params || {},
fullPath: getFullPath(location, stringifyQuery$$1),
matched: record ? formatMatch(record) : []
};
if (redirectedFrom) {
route.redirectedFrom = getFullPath(redirectedFrom, stringifyQuery$$1);
}
return Object.freeze(route)
}

function clone (value) {
if (Array.isArray(value)) {
return value.map(clone)
} else if (value && typeof value === 'object') {
var res = {};
for (var key in value) {
res[key] = clone(value[key]);
}
return res
} else {
return value
}
}

// the starting route that represents the initial state
var START = createRoute(null, {
path: '/'
});

function formatMatch (record) {
var res = [];
while (record) {
res.unshift(record);
record = record.parent;
}
return res
}

function getFullPath (
ref,
_stringifyQuery
) {
var path = ref.path;
var query = ref.query; if ( query === void 0 ) query = {};
var hash = ref.hash; if ( hash === void 0 ) hash = '';

var stringify = _stringifyQuery || stringifyQuery;
return (path || '/') + stringify(query) + hash
}

function isSameRoute (a, b) {
if (b === START) {
return a === b
} else if (!b) {
return false
} else if (a.path && b.path) {
return (
a.path.replace(trailingSlashRE, '') === b.path.replace(trailingSlashRE, '') &&
a.hash === b.hash &&
isObjectEqual(a.query, b.query)
)
} else if (a.name && b.name) {
return (
a.name === b.name &&
a.hash === b.hash &&
isObjectEqual(a.query, b.query) &&
isObjectEqual(a.params, b.params)
)
} else {
return false
}
}

function isObjectEqual (a, b) {
if ( a === void 0 ) a = {};
if ( b === void 0 ) b = {};

// handle null value #1566
if (!a || !b) { return a === b }
var aKeys = Object.keys(a);
var bKeys = Object.keys(b);
if (aKeys.length !== bKeys.length) {
return false
}
return aKeys.every(function (key) {
var aVal = a[key];
var bVal = b[key];
// check nested equality
if (typeof aVal === 'object' && typeof bVal === 'object') {
return isObjectEqual(aVal, bVal)
}
return String(aVal) === String(bVal)
})
}

function isIncludedRoute (current, target) {
return (
current.path.replace(trailingSlashRE, '/').indexOf(
target.path.replace(trailingSlashRE, '/')
) === 0 &&
(!target.hash || current.hash === target.hash) &&
queryIncludes(current.query, target.query)
)
}

function queryIncludes (current, target) {
for (var key in target) {
if (!(key in current)) {
return false
}
}
return true
}

/* */

// work around weird flow bug
var toTypes = [String, Object];
var eventTypes = [String, Array];

var Link = {
name: 'router-link',
props: {
to: {
type: toTypes,
required: true
},
tag: {
type: String,
default: 'a'
},
exact: Boolean,
append: Boolean,
replace: Boolean,
activeClass: String,
exactActiveClass: String,
event: {
type: eventTypes,
default: 'click'
}
},
render: function render (h) {
var this$1 = this;

var router = this.$router;
var current = this.$route;
var ref = router.resolve(this.to, current, this.append);
var location = ref.location;
var route = ref.route;
var href = ref.href;

var classes = {};
var globalActiveClass = router.options.linkActiveClass;
var globalExactActiveClass = router.options.linkExactActiveClass;
// Support global empty active class
var activeClassFallback = globalActiveClass == null
? 'router-link-active'
: globalActiveClass;
var exactActiveClassFallback = globalExactActiveClass == null
? 'router-link-exact-active'
: globalExactActiveClass;
var activeClass = this.activeClass == null
? activeClassFallback
: this.activeClass;
var exactActiveClass = this.exactActiveClass == null
? exactActiveClassFallback
: this.exactActiveClass;
var compareTarget = location.path
? createRoute(null, location, null, router)
: route;

classes[exactActiveClass] = isSameRoute(current, compareTarget);
classes[activeClass] = this.exact
? classes[exactActiveClass]
: isIncludedRoute(current, compareTarget);

var handler = function (e) {
if (guardEvent(e)) {
if (this$1.replace) {
router.replace(location);
} else {
router.push(location);
}
}
};

var on = { click: guardEvent };
if (Array.isArray(this.event)) {
this.event.forEach(function (e) { on[e] = handler; });
} else {
on[this.event] = handler;
}

var data = {
class: classes
};

if (this.tag === 'a') {
data.on = on;
data.attrs = { href: href };
} else {
// find the first <a> child and apply listener and href
var a = findAnchor(this.$slots.default);
if (a) {
// in case the <a> is a static node
a.isStatic = false;
var extend = _Vue.util.extend;
var aData = a.data = extend({}, a.data);
aData.on = on;
var aAttrs = a.data.attrs = extend({}, a.data.attrs);
aAttrs.href = href;
} else {
// doesn't have <a> child, apply listener to self
data.on = on;
}
}

return h(this.tag, data, this.$slots.default)
}
};

function guardEvent (e) {
// don't redirect with control keys
if (e.metaKey || e.altKey || e.ctrlKey || e.shiftKey) { return }
// don't redirect when preventDefault called
if (e.defaultPrevented) { return }
// don't redirect on right click
if (e.button !== undefined && e.button !== 0) { return }
// don't redirect if `target="_blank"`
if (e.currentTarget && e.currentTarget.getAttribute) {
var target = e.currentTarget.getAttribute('target');
if (/\b_blank\b/i.test(target)) { return }
}
// this may be a Weex event which doesn't have this method
if (e.preventDefault) {
e.preventDefault();
}
return true
}

function findAnchor (children) {
if (children) {
var child;
for (var i = 0; i < children.length; i++) {
child = children[i];
if (child.tag === 'a') {
return child
}
if (child.children && (child = findAnchor(child.children))) {
return child
}
}
}
}

var _Vue;

function install (Vue) {
if (install.installed && _Vue === Vue) { return }
install.installed = true;

_Vue = Vue;

var isDef = function (v) { return v !== undefined; };

var registerInstance = function (vm, callVal) {
var i = vm.$options._parentVnode;
if (isDef(i) && isDef(i = i.data) && isDef(i = i.registerRouteInstance)) {
i(vm, callVal);
}
};

Vue.mixin({
beforeCreate: function beforeCreate () {
if (isDef(this.$options.router)) {
this._routerRoot = this;
this._router = this.$options.router;
this._router.init(this);
Vue.util.defineReactive(this, '_route', this._router.history.current);
} else {
this._routerRoot = (this.$parent && this.$parent._routerRoot) || this;
}
registerInstance(this, this);
},
destroyed: function destroyed () {
registerInstance(this);
}
});

Object.defineProperty(Vue.prototype, '$router', {
get: function get () { return this._routerRoot._router }
});

Object.defineProperty(Vue.prototype, '$route', {
get: function get () { return this._routerRoot._route }
});

Vue.component('router-view', View);
Vue.component('router-link', Link);

var strats = Vue.config.optionMergeStrategies;
// use the same hook merging strategy for route hooks
strats.beforeRouteEnter = strats.beforeRouteLeave = strats.beforeRouteUpdate = strats.created;
}

/* */

var inBrowser = typeof window !== 'undefined';

/* */

function resolvePath (
relative,
base,
append
) {
var firstChar = relative.charAt(0);
if (firstChar === '/') {
return relative
}

if (firstChar === '?' || firstChar === '#') {
return base + relative
}

var stack = base.split('/');

// remove trailing segment if:
// - not appending
// - appending to trailing slash (last segment is empty)
if (!append || !stack[stack.length - 1]) {
stack.pop();
}

// resolve relative path
var segments = relative.replace(/^\//, '').split('/');
for (var i = 0; i < segments.length; i++) {
var segment = segments[i];
if (segment === '..') {
stack.pop();
} else if (segment !== '.') {
stack.push(segment);
}
}

// ensure leading slash
if (stack[0] !== '') {
stack.unshift('');
}

return stack.join('/')
}

function parsePath (path) {
var hash = '';
var query = '';

var hashIndex = path.indexOf('#');
if (hashIndex >= 0) {
hash = path.slice(hashIndex);
path = path.slice(0, hashIndex);
}

var queryIndex = path.indexOf('?');
if (queryIndex >= 0) {
query = path.slice(queryIndex + 1);
path = path.slice(0, queryIndex);
}

return {
path: path,
query: query,
hash: hash
}
}

function cleanPath (path) {
return path.replace(/\/\//g, '/')
}

var isarray = Array.isArray || function (arr) {
return Object.prototype.toString.call(arr) == '[object Array]';
};

/**
* Expose `pathToRegexp`.
*/
var pathToRegexp_1 = pathToRegexp;
var parse_1 = parse;
var compile_1 = compile;
var tokensToFunction_1 = tokensToFunction;
var tokensToRegExp_1 = tokensToRegExp;

/**
* The main path matching regexp utility.
*
* @type {RegExp}
*/
var PATH_REGEXP = new RegExp([
// Match escaped characters that would otherwise appear in future matches.
// This allows the user to escape special characters that won't transform.
'(\\\\.)',
// Match Express-style parameters and un-named parameters with a prefix
// and optional suffixes. Matches appear as:
//
// "/:test(\\d+)?" => ["/", "test", "\d+", undefined, "?", undefined]
// "/route(\\d+)" => [undefined, undefined, undefined, "\d+", undefined, undefined]
// "/*" => ["/", undefined, undefined, undefined, undefined, "*"]
'([\\/.])?(?:(?:\\:(\\w+)(?:\\(((?:\\\\.|[^\\\\()])+)\\))?|\\(((?:\\\\.|[^\\\\()])+)\\))([+*?])?|(\\*))'
].join('|'), 'g');

/**
* Parse a string for the raw tokens.
*
* @param {string} str
* @param {Object=} options
* @return {!Array}
*/
function parse (str, options) {
var tokens = [];
var key = 0;
var index = 0;
var path = '';
var defaultDelimiter = options && options.delimiter || '/';
var res;

while ((res = PATH_REGEXP.exec(str)) != null) {
var m = res[0];
var escaped = res[1];
var offset = res.index;
path += str.slice(index, offset);
index = offset + m.length;

// Ignore already escaped sequences.
if (escaped) {
path += escaped[1];
continue
}

var next = str[index];
var prefix = res[2];
var name = res[3];
var capture = res[4];
var group = res[5];
var modifier = res[6];
var asterisk = res[7];

// Push the current path onto the tokens.
if (path) {
tokens.push(path);
path = '';
}

var partial = prefix != null && next != null && next !== prefix;
var repeat = modifier === '+' || modifier === '*';
var optional = modifier === '?' || modifier === '*';
var delimiter = res[2] || defaultDelimiter;
var pattern = capture || group;

tokens.push({
name: name || key++,
prefix: prefix || '',
delimiter: delimiter,
optional: optional,
repeat: repeat,
partial: partial,
asterisk: !!asterisk,
pattern: pattern ? escapeGroup(pattern) : (asterisk ? '.*' : '[^' + escapeString(delimiter) + ']+?')
});
}

// Match any characters still remaining.
if (index < str.length) {
path += str.substr(index);
}

// If the path exists, push it onto the end.
if (path) {
tokens.push(path);
}

return tokens
}

/**
* Compile a string to a template function for the path.
*
* @param {string} str
* @param {Object=} options
* @return {!function(Object=, Object=)}
*/
function compile (str, options) {
return tokensToFunction(parse(str, options))
}

/**
* Prettier encoding of URI path segments.
*
* @param {string}
* @return {string}
*/
function encodeURIComponentPretty (str) {
return encodeURI(str).replace(/[\/?#]/g, function (c) {
return '%' + c.charCodeAt(0).toString(16).toUpperCase()
})
}

/**
* Encode the asterisk parameter. Similar to `pretty`, but allows slashes.
*
* @param {string}
* @return {string}
*/
function encodeAsterisk (str) {
return encodeURI(str).replace(/[?#]/g, function (c) {
return '%' + c.charCodeAt(0).toString(16).toUpperCase()
})
}

/**
* Expose a method for transforming tokens into the path function.
*/
function tokensToFunction (tokens) {
// Compile all the tokens into regexps.
var matches = new Array(tokens.length);

// Compile all the patterns before compilation.
for (var i = 0; i < tokens.length; i++) {
if (typeof tokens[i] === 'object') {
matches[i] = new RegExp('^(?:' + tokens[i].pattern + ')$');
}
}

return function (obj, opts) {
var path = '';
var data = obj || {};
var options = opts || {};
var encode = options.pretty ? encodeURIComponentPretty : encodeURIComponent;

for (var i = 0; i < tokens.length; i++) {
var token = tokens[i];

if (typeof token === 'string') {
path += token;

continue
}

var value = data[token.name];
var segment;

if (value == null) {
if (token.optional) {
// Prepend partial segment prefixes.
if (token.partial) {
path += token.prefix;
}

continue
} else {
throw new TypeError('Expected "' + token.name + '" to be defined')
}
}

if (isarray(value)) {
if (!token.repeat) {
throw new TypeError('Expected "' + token.name + '" to not repeat, but received `' + JSON.stringify(value) + '`')
}

if (value.length === 0) {
if (token.optional) {
continue
} else {
throw new TypeError('Expected "' + token.name + '" to not be empty')
}
}

for (var j = 0; j < value.length; j++) {
segment = encode(value[j]);

if (!matches[i].test(segment)) {
throw new TypeError('Expected all "' + token.name + '" to match "' + token.pattern + '", but received `' + JSON.stringify(segment) + '`')
}

path += (j === 0 ? token.prefix : token.delimiter) + segment;
}

continue
}

segment = token.asterisk ? encodeAsterisk(value) : encode(value);

if (!matches[i].test(segment)) {
throw new TypeError('Expected "' + token.name + '" to match "' + token.pattern + '", but received "' + segment + '"')
}

path += token.prefix + segment;
}

return path
}
}

/**
* Escape a regular expression string.
*
* @param {string} str
* @return {string}
*/
function escapeString (str) {
return str.replace(/([.+*?=^!:${}()[\]|\/\\])/g, '\\$1')
}

/**
* Escape the capturing group by escaping special characters and meaning.
*
* @param {string} group
* @return {string}
*/
function escapeGroup (group) {
return group.replace(/([=!:$\/()])/g, '\\$1')
}

/**
* Attach the keys as a property of the regexp.
*
* @param {!RegExp} re
* @param {Array} keys
* @return {!RegExp}
*/
function attachKeys (re, keys) {
re.keys = keys;
return re
}

/**
* Get the flags for a regexp from the options.
*
* @param {Object} options
* @return {string}
*/
function flags (options) {
return options.sensitive ? '' : 'i'
}

/**
* Pull out keys from a regexp.
*
* @param {!RegExp} path
* @param {!Array} keys
* @return {!RegExp}
*/
function regexpToRegexp (path, keys) {
// Use a negative lookahead to match only capturing groups.
var groups = path.source.match(/\((?!\?)/g);

if (groups) {
for (var i = 0; i < groups.length; i++) {
keys.push({
name: i,
prefix: null,
delimiter: null,
optional: false,
repeat: false,
partial: false,
asterisk: false,
pattern: null
});
}
}

return attachKeys(path, keys)
}

/**
* Transform an array into a regexp.
*
* @param {!Array} path
* @param {Array} keys
* @param {!Object} options
* @return {!RegExp}
*/
function arrayToRegexp (path, keys, options) {
var parts = [];

for (var i = 0; i < path.length; i++) {
parts.push(pathToRegexp(path[i], keys, options).source);
}

var regexp = new RegExp('(?:' + parts.join('|') + ')', flags(options));

return attachKeys(regexp, keys)
}

/**
* Create a path regexp from string input.
*
* @param {string} path
* @param {!Array} keys
* @param {!Object} options
* @return {!RegExp}
*/
function stringToRegexp (path, keys, options) {
return tokensToRegExp(parse(path, options), keys, options)
}

/**
* Expose a function for taking tokens and returning a RegExp.
*
* @param {!Array} tokens
* @param {(Array|Object)=} keys
* @param {Object=} options
* @return {!RegExp}
*/
function tokensToRegExp (tokens, keys, options) {
if (!isarray(keys)) {
options = /** @type {!Object} */ (keys || options);
keys = [];
}

options = options || {};

var strict = options.strict;
var end = options.end !== false;
var route = '';

// Iterate over the tokens and create our regexp string.
for (var i = 0; i < tokens.length; i++) {
var token = tokens[i];

if (typeof token === 'string') {
route += escapeString(token);
} else {
var prefix = escapeString(token.prefix);
var capture = '(?:' + token.pattern + ')';

keys.push(token);

if (token.repeat) {
capture += '(?:' + prefix + capture + ')*';
}

if (token.optional) {
if (!token.partial) {
capture = '(?:' + prefix + '(' + capture + '))?';
} else {
capture = prefix + '(' + capture + ')?';
}
} else {
capture = prefix + '(' + capture + ')';
}

route += capture;
}
}

var delimiter = escapeString(options.delimiter || '/');
var endsWithDelimiter = route.slice(-delimiter.length) === delimiter;

// In non-strict mode we allow a slash at the end of match. If the path to
// match already ends with a slash, we remove it for consistency. The slash
// is valid at the end of a path match, not in the middle. This is important
// in non-ending mode, where "/test/" shouldn't match "/test//route".
if (!strict) {
route = (endsWithDelimiter ? route.slice(0, -delimiter.length) : route) + '(?:' + delimiter + '(?=$))?';
}

if (end) {
route += '$';
} else {
// In non-ending mode, we need the capturing groups to match as much as
// possible by using a positive lookahead to the end or next path segment.
route += strict && endsWithDelimiter ? '' : '(?=' + delimiter + '|$)';
}

return attachKeys(new RegExp('^' + route, flags(options)), keys)
}

/**
* Normalize the given path string, returning a regular expression.
*
* An empty array can be passed in for the keys, which will hold the
* placeholder key descriptions. For example, using `/user/:id`, `keys` will
* contain `[{ name: 'id', delimiter: '/', optional: false, repeat: false }]`.
*
* @param {(string|RegExp|Array)} path
* @param {(Array|Object)=} keys
* @param {Object=} options
* @return {!RegExp}
*/
function pathToRegexp (path, keys, options) {
if (!isarray(keys)) {
options = /** @type {!Object} */ (keys || options);
keys = [];
}

options = options || {};

if (path instanceof RegExp) {
return regexpToRegexp(path, /** @type {!Array} */ (keys))
}

if (isarray(path)) {
return arrayToRegexp(/** @type {!Array} */ (path), /** @type {!Array} */ (keys), options)
}

return stringToRegexp(/** @type {string} */ (path), /** @type {!Array} */ (keys), options)
}

pathToRegexp_1.parse = parse_1;
pathToRegexp_1.compile = compile_1;
pathToRegexp_1.tokensToFunction = tokensToFunction_1;
pathToRegexp_1.tokensToRegExp = tokensToRegExp_1;

/* */

// $flow-disable-line
var regexpCompileCache = Object.create(null);

function fillParams (
path,
params,
routeMsg
) {
try {
var filler =
regexpCompileCache[path] ||
(regexpCompileCache[path] = pathToRegexp_1.compile(path));
return filler(params || {}, { pretty: true })
} catch (e) {
{
warn(false, ("missing param for " + routeMsg + ": " + (e.message)));
}
return ''
}
}

/* */

function createRouteMap (
routes,
oldPathList,
oldPathMap,
oldNameMap
) {
// the path list is used to control path matching priority
var pathList = oldPathList || [];
// $flow-disable-line
var pathMap = oldPathMap || Object.create(null);
// $flow-disable-line
var nameMap = oldNameMap || Object.create(null);

routes.forEach(function (route) {
addRouteRecord(pathList, pathMap, nameMap, route);
});

// ensure wildcard routes are always at the end
for (var i = 0, l = pathList.length; i < l; i++) {
if (pathList[i] === '*') {
pathList.push(pathList.splice(i, 1)[0]);
l--;
i--;
}
}

return {
pathList: pathList,
pathMap: pathMap,
nameMap: nameMap
}
}

function addRouteRecord (
pathList,
pathMap,
nameMap,
route,
parent,
matchAs
) {
var path = route.path;
var name = route.name;
{
assert(path != null, "\"path\" is required in a route configuration.");
assert(
typeof route.component !== 'string',
"route config \"component\" for path: " + (String(path || name)) + " cannot be a " +
"string id. Use an actual component instead."
);
}

var pathToRegexpOptions = route.pathToRegexpOptions || {};
var normalizedPath = normalizePath(
path,
parent,
pathToRegexpOptions.strict
);

if (typeof route.caseSensitive === 'boolean') {
pathToRegexpOptions.sensitive = route.caseSensitive;
}

var record = {
path: normalizedPath,
regex: compileRouteRegex(normalizedPath, pathToRegexpOptions),
components: route.components || { default: route.component },
instances: {},
name: name,
parent: parent,
matchAs: matchAs,
redirect: route.redirect,
beforeEnter: route.beforeEnter,
meta: route.meta || {},
props: route.props == null
? {}
: route.components
? route.props
: { default: route.props }
};

if (route.children) {
// Warn if route is named, does not redirect and has a default child route.
// If users navigate to this route by name, the default child will
// not be rendered (GH Issue #629)
{
if (route.name && !route.redirect && route.children.some(function (child) { return /^\/?$/.test(child.path); })) {
warn(
false,
"Named Route '" + (route.name) + "' has a default child route. " +
"When navigating to this named route (:to=\"{name: '" + (route.name) + "'\"), " +
"the default child route will not be rendered. Remove the name from " +
"this route and use the name of the default child route for named " +
"links instead."
);
}
}
route.children.forEach(function (child) {
var childMatchAs = matchAs
? cleanPath((matchAs + "/" + (child.path)))
: undefined;
addRouteRecord(pathList, pathMap, nameMap, child, record, childMatchAs);
});
}

if (route.alias !== undefined) {
var aliases = Array.isArray(route.alias)
? route.alias
: [route.alias];

aliases.forEach(function (alias) {
var aliasRoute = {
path: alias,
children: route.children
};
addRouteRecord(
pathList,
pathMap,
nameMap,
aliasRoute,
parent,
record.path || '/' // matchAs
);
});
}

if (!pathMap[record.path]) {
pathList.push(record.path);
pathMap[record.path] = record;
}

if (name) {
if (!nameMap[name]) {
nameMap[name] = record;
} else if ("development" !== 'production' && !matchAs) {
warn(
false,
"Duplicate named routes definition: " +
"{ name: \"" + name + "\", path: \"" + (record.path) + "\" }"
);
}
}
}

function compileRouteRegex (path, pathToRegexpOptions) {
var regex = pathToRegexp_1(path, [], pathToRegexpOptions);
{
var keys = Object.create(null);
regex.keys.forEach(function (key) {
warn(!keys[key.name], ("Duplicate param keys in route with path: \"" + path + "\""));
keys[key.name] = true;
});
}
return regex
}

function normalizePath (path, parent, strict) {
if (!strict) { path = path.replace(/\/$/, ''); }
if (path[0] === '/') { return path }
if (parent == null) { return path }
return cleanPath(((parent.path) + "/" + path))
}

/* */


function normalizeLocation (
raw,
current,
append,
router
) {
var next = typeof raw === 'string' ? { path: raw } : raw;
// named target
if (next.name || next._normalized) {
return next
}

// relative params
if (!next.path && next.params && current) {
next = assign({}, next);
next._normalized = true;
var params = assign(assign({}, current.params), next.params);
if (current.name) {
next.name = current.name;
next.params = params;
} else if (current.matched.length) {
var rawPath = current.matched[current.matched.length - 1].path;
next.path = fillParams(rawPath, params, ("path " + (current.path)));
} else {
warn(false, "relative params navigation requires a current route.");
}
return next
}

var parsedPath = parsePath(next.path || '');
var basePath = (current && current.path) || '/';
var path = parsedPath.path
? resolvePath(parsedPath.path, basePath, append || next.append)
: basePath;

var query = resolveQuery(
parsedPath.query,
next.query,
router && router.options.parseQuery
);

var hash = next.hash || parsedPath.hash;
if (hash && hash.charAt(0) !== '#') {
hash = "#" + hash;
}

return {
_normalized: true,
path: path,
query: query,
hash: hash
}
}

function assign (a, b) {
for (var key in b) {
a[key] = b[key];
}
return a
}

/* */


function createMatcher (
routes,
router
) {
var ref = createRouteMap(routes);
var pathList = ref.pathList;
var pathMap = ref.pathMap;
var nameMap = ref.nameMap;

function addRoutes (routes) {
createRouteMap(routes, pathList, pathMap, nameMap);
}

function match (
raw,
currentRoute,
redirectedFrom
) {
var location = normalizeLocation(raw, currentRoute, false, router);
var name = location.name;

if (name) {
var record = nameMap[name];
{
warn(record, ("Route with name '" + name + "' does not exist"));
}
if (!record) { return _createRoute(null, location) }
var paramNames = record.regex.keys
.filter(function (key) { return !key.optional; })
.map(function (key) { return key.name; });

if (typeof location.params !== 'object') {
location.params = {};
}

if (currentRoute && typeof currentRoute.params === 'object') {
for (var key in currentRoute.params) {
if (!(key in location.params) && paramNames.indexOf(key) > -1) {
location.params[key] = currentRoute.params[key];
}
}
}

if (record) {
location.path = fillParams(record.path, location.params, ("named route \"" + name + "\""));
return _createRoute(record, location, redirectedFrom)
}
} else if (location.path) {
location.params = {};
for (var i = 0; i < pathList.length; i++) {
var path = pathList[i];
var record$1 = pathMap[path];
if (matchRoute(record$1.regex, location.path, location.params)) {
return _createRoute(record$1, location, redirectedFrom)
}
}
}
// no match
return _createRoute(null, location)
}

function redirect (
record,
location
) {
var originalRedirect = record.redirect;
var redirect = typeof originalRedirect === 'function'
? originalRedirect(createRoute(record, location, null, router))
: originalRedirect;

if (typeof redirect === 'string') {
redirect = { path: redirect };
}

if (!redirect || typeof redirect !== 'object') {
{
warn(
false, ("invalid redirect option: " + (JSON.stringify(redirect)))
);
}
return _createRoute(null, location)
}

var re = redirect;
var name = re.name;
var path = re.path;
var query = location.query;
var hash = location.hash;
var params = location.params;
query = re.hasOwnProperty('query') ? re.query : query;
hash = re.hasOwnProperty('hash') ? re.hash : hash;
params = re.hasOwnProperty('params') ? re.params : params;

if (name) {
// resolved named direct
var targetRecord = nameMap[name];
{
assert(targetRecord, ("redirect failed: named route \"" + name + "\" not found."));
}
return match({
_normalized: true,
name: name,
query: query,
hash: hash,
params: params
}, undefined, location)
} else if (path) {
// 1. resolve relative redirect
var rawPath = resolveRecordPath(path, record);
// 2. resolve params
var resolvedPath = fillParams(rawPath, params, ("redirect route with path \"" + rawPath + "\""));
// 3. rematch with existing query and hash
return match({
_normalized: true,
path: resolvedPath,
query: query,
hash: hash
}, undefined, location)
} else {
{
warn(false, ("invalid redirect option: " + (JSON.stringify(redirect))));
}
return _createRoute(null, location)
}
}

function alias (
record,
location,
matchAs
) {
var aliasedPath = fillParams(matchAs, location.params, ("aliased route with path \"" + matchAs + "\""));
var aliasedMatch = match({
_normalized: true,
path: aliasedPath
});
if (aliasedMatch) {
var matched = aliasedMatch.matched;
var aliasedRecord = matched[matched.length - 1];
location.params = aliasedMatch.params;
return _createRoute(aliasedRecord, location)
}
return _createRoute(null, location)
}

function _createRoute (
record,
location,
redirectedFrom
) {
if (record && record.redirect) {
return redirect(record, redirectedFrom || location)
}
if (record && record.matchAs) {
return alias(record, location, record.matchAs)
}
return createRoute(record, location, redirectedFrom, router)
}

return {
match: match,
addRoutes: addRoutes
}
}

function matchRoute (
regex,
path,
params
) {
var m = path.match(regex);

if (!m) {
return false
} else if (!params) {
return true
}

for (var i = 1, len = m.length; i < len; ++i) {
var key = regex.keys[i - 1];
var val = typeof m[i] === 'string' ? decodeURIComponent(m[i]) : m[i];
if (key) {
params[key.name] = val;
}
}

return true
}

function resolveRecordPath (path, record) {
return resolvePath(path, record.parent ? record.parent.path : '/', true)
}

/* */


var positionStore = Object.create(null);

function setupScroll () {
// Fix for #1585 for Firefox
window.history.replaceState({ key: getStateKey() }, '');
window.addEventListener('popstate', function (e) {
saveScrollPosition();
if (e.state && e.state.key) {
setStateKey(e.state.key);
}
});
}

function handleScroll (
router,
to,
from,
isPop
) {
if (!router.app) {
return
}

var behavior = router.options.scrollBehavior;
if (!behavior) {
return
}

{
assert(typeof behavior === 'function', "scrollBehavior must be a function");
}

// wait until re-render finishes before scrolling
router.app.$nextTick(function () {
var position = getScrollPosition();
var shouldScroll = behavior(to, from, isPop ? position : null);

if (!shouldScroll) {
return
}

if (typeof shouldScroll.then === 'function') {
shouldScroll.then(function (shouldScroll) {
scrollToPosition((shouldScroll), position);
}).catch(function (err) {
{
assert(false, err.toString());
}
});
} else {
scrollToPosition(shouldScroll, position);
}
});
}

function saveScrollPosition () {
var key = getStateKey();
if (key) {
positionStore[key] = {
x: window.pageXOffset,
y: window.pageYOffset
};
}
}

function getScrollPosition () {
var key = getStateKey();
if (key) {
return positionStore[key]
}
}

function getElementPosition (el, offset) {
var docEl = document.documentElement;
var docRect = docEl.getBoundingClientRect();
var elRect = el.getBoundingClientRect();
return {
x: elRect.left - docRect.left - offset.x,
y: elRect.top - docRect.top - offset.y
}
}

function isValidPosition (obj) {
return isNumber(obj.x) || isNumber(obj.y)
}

function normalizePosition (obj) {
return {
x: isNumber(obj.x) ? obj.x : window.pageXOffset,
y: isNumber(obj.y) ? obj.y : window.pageYOffset
}
}

function normalizeOffset (obj) {
return {
x: isNumber(obj.x) ? obj.x : 0,
y: isNumber(obj.y) ? obj.y : 0
}
}

function isNumber (v) {
return typeof v === 'number'
}

function scrollToPosition (shouldScroll, position) {
var isObject = typeof shouldScroll === 'object';
if (isObject && typeof shouldScroll.selector === 'string') {
var el = document.querySelector(shouldScroll.selector);
if (el) {
var offset = shouldScroll.offset && typeof shouldScroll.offset === 'object' ? shouldScroll.offset : {};
offset = normalizeOffset(offset);
position = getElementPosition(el, offset);
} else if (isValidPosition(shouldScroll)) {
position = normalizePosition(shouldScroll);
}
} else if (isObject && isValidPosition(shouldScroll)) {
position = normalizePosition(shouldScroll);
}

if (position) {
window.scrollTo(position.x, position.y);
}
}

/* */

var supportsPushState = inBrowser && (function () {
var ua = window.navigator.userAgent;

if (
(ua.indexOf('Android 2.') !== -1 || ua.indexOf('Android 4.0') !== -1) &&
ua.indexOf('Mobile Safari') !== -1 &&
ua.indexOf('Chrome') === -1 &&
ua.indexOf('Windows Phone') === -1
) {
return false
}

return window.history && 'pushState' in window.history
})();

// use User Timing api (if present) for more accurate key precision
var Time = inBrowser && window.performance && window.performance.now
? window.performance
: Date;

var _key = genKey();

function genKey () {
return Time.now().toFixed(3)
}

function getStateKey () {
return _key
}

function setStateKey (key) {
_key = key;
}

function pushState (url, replace) {
saveScrollPosition();
// try...catch the pushState call to get around Safari
// DOM Exception 18 where it limits to 100 pushState calls
var history = window.history;
try {
if (replace) {
history.replaceState({ key: _key }, '', url);
} else {
_key = genKey();
history.pushState({ key: _key }, '', url);
}
} catch (e) {
window.location[replace ? 'replace' : 'assign'](url);
}
}

function replaceState (url) {
pushState(url, true);
}

/* */

function runQueue (queue, fn, cb) {
var step = function (index) {
if (index >= queue.length) {
cb();
} else {
if (queue[index]) {
fn(queue[index], function () {
step(index + 1);
});
} else {
step(index + 1);
}
}
};
step(0);
}

/* */

function resolveAsyncComponents (matched) {
return function (to, from, next) {
var hasAsync = false;
var pending = 0;
var error = null;

flatMapComponents(matched, function (def, _, match, key) {
// if it's a function and doesn't have cid attached,
// assume it's an async component resolve function.
// we are not using Vue's default async resolving mechanism because
// we want to halt the navigation until the incoming component has been
// resolved.
if (typeof def === 'function' && def.cid === undefined) {
hasAsync = true;
pending++;

var resolve = once(function (resolvedDef) {
if (isESModule(resolvedDef)) {
resolvedDef = resolvedDef.default;
}
// save resolved on async factory in case it's used elsewhere
def.resolved = typeof resolvedDef === 'function'
? resolvedDef
: _Vue.extend(resolvedDef);
match.components[key] = resolvedDef;
pending--;
if (pending <= 0) {
next();
}
});

var reject = once(function (reason) {
var msg = "Failed to resolve async component " + key + ": " + reason;
"development" !== 'production' && warn(false, msg);
if (!error) {
error = isError(reason)
? reason
: new Error(msg);
next(error);
}
});

var res;
try {
res = def(resolve, reject);
} catch (e) {
reject(e);
}
if (res) {
if (typeof res.then === 'function') {
res.then(resolve, reject);
} else {
// new syntax in Vue 2.3
var comp = res.component;
if (comp && typeof comp.then === 'function') {
comp.then(resolve, reject);
}
}
}
}
});

if (!hasAsync) { next(); }
}
}

function flatMapComponents (
matched,
fn
) {
return flatten(matched.map(function (m) {
return Object.keys(m.components).map(function (key) { return fn(
m.components[key],
m.instances[key],
m, key
); })
}))
}

function flatten (arr) {
return Array.prototype.concat.apply([], arr)
}

var hasSymbol =
typeof Symbol === 'function' &&
typeof Symbol.toStringTag === 'symbol';

function isESModule (obj) {
return obj.__esModule || (hasSymbol && obj[Symbol.toStringTag] === 'Module')
}

// in Webpack 2, require.ensure now also returns a Promise
// so the resolve/reject functions may get called an extra time
// if the user uses an arrow function shorthand that happens to
// return that Promise.
function once (fn) {
var called = false;
return function () {
var args = [], len = arguments.length;
while ( len-- ) args[ len ] = arguments[ len ];

if (called) { return }
called = true;
return fn.apply(this, args)
}
}

/* */

var History = function History (router, base) {
this.router = router;
this.base = normalizeBase(base);
// start with a route object that stands for "nowhere"
this.current = START;
this.pending = null;
this.ready = false;
this.readyCbs = [];
this.readyErrorCbs = [];
this.errorCbs = [];
};

History.prototype.listen = function listen (cb) {
this.cb = cb;
};

History.prototype.onReady = function onReady (cb, errorCb) {
if (this.ready) {
cb();
} else {
this.readyCbs.push(cb);
if (errorCb) {
this.readyErrorCbs.push(errorCb);
}
}
};

History.prototype.onError = function onError (errorCb) {
this.errorCbs.push(errorCb);
};

History.prototype.transitionTo = function transitionTo (location, onComplete, onAbort) {
var this$1 = this;

var route = this.router.match(location, this.current);
this.confirmTransition(route, function () {
this$1.updateRoute(route);
onComplete && onComplete(route);
this$1.ensureURL();

// fire ready cbs once
if (!this$1.ready) {
this$1.ready = true;
this$1.readyCbs.forEach(function (cb) { cb(route); });
}
}, function (err) {
if (onAbort) {
onAbort(err);
}
if (err && !this$1.ready) {
this$1.ready = true;
this$1.readyErrorCbs.forEach(function (cb) { cb(err); });
}
});
};

History.prototype.confirmTransition = function confirmTransition (route, onComplete, onAbort) {
var this$1 = this;

var current = this.current;
var abort = function (err) {
if (isError(err)) {
if (this$1.errorCbs.length) {
this$1.errorCbs.forEach(function (cb) { cb(err); });
} else {
warn(false, 'uncaught error during route navigation:');
console.error(err);
}
}
onAbort && onAbort(err);
};
if (
isSameRoute(route, current) &&
// in the case the route map has been dynamically appended to
route.matched.length === current.matched.length
) {
this.ensureURL();
return abort()
}

var ref = resolveQueue(this.current.matched, route.matched);
var updated = ref.updated;
var deactivated = ref.deactivated;
var activated = ref.activated;

var queue = [].concat(
// in-component leave guards
extractLeaveGuards(deactivated),
// global before hooks
this.router.beforeHooks,
// in-component update hooks
extractUpdateHooks(updated),
// in-config enter guards
activated.map(function (m) { return m.beforeEnter; }),
// async components
resolveAsyncComponents(activated)
);

this.pending = route;
var iterator = function (hook, next) {
if (this$1.pending !== route) {
return abort()
}
try {
hook(route, current, function (to) {
if (to === false || isError(to)) {
// next(false) -> abort navigation, ensure current URL
this$1.ensureURL(true);
abort(to);
} else if (
typeof to === 'string' ||
(typeof to === 'object' && (
typeof to.path === 'string' ||
typeof to.name === 'string'
))
) {
// next('/') or next({ path: '/' }) -> redirect
abort();
if (typeof to === 'object' && to.replace) {
this$1.replace(to);
} else {
this$1.push(to);
}
} else {
// confirm transition and pass on the value
next(to);
}
});
} catch (e) {
abort(e);
}
};

runQueue(queue, iterator, function () {
var postEnterCbs = [];
var isValid = function () { return this$1.current === route; };
// wait until async components are resolved before
// extracting in-component enter guards
var enterGuards = extractEnterGuards(activated, postEnterCbs, isValid);
var queue = enterGuards.concat(this$1.router.resolveHooks);
runQueue(queue, iterator, function () {
if (this$1.pending !== route) {
return abort()
}
this$1.pending = null;
onComplete(route);
if (this$1.router.app) {
this$1.router.app.$nextTick(function () {
postEnterCbs.forEach(function (cb) { cb(); });
});
}
});
});
};

History.prototype.updateRoute = function updateRoute (route) {
var prev = this.current;
this.current = route;
this.cb && this.cb(route);
this.router.afterHooks.forEach(function (hook) {
hook && hook(route, prev);
});
};

function normalizeBase (base) {
if (!base) {
if (inBrowser) {
// respect <base> tag
var baseEl = document.querySelector('base');
base = (baseEl && baseEl.getAttribute('href')) || '/';
// strip full URL origin
base = base.replace(/^https?:\/\/[^\/]+/, '');
} else {
base = '/';
}
}
// make sure there's the starting slash
if (base.charAt(0) !== '/') {
base = '/' + base;
}
// remove trailing slash
return base.replace(/\/$/, '')
}

function resolveQueue (
current,
next
) {
var i;
var max = Math.max(current.length, next.length);
for (i = 0; i < max; i++) {
if (current[i] !== next[i]) {
break
}
}
return {
updated: next.slice(0, i),
activated: next.slice(i),
deactivated: current.slice(i)
}
}

function extractGuards (
records,
name,
bind,
reverse
) {
var guards = flatMapComponents(records, function (def, instance, match, key) {
var guard = extractGuard(def, name);
if (guard) {
return Array.isArray(guard)
? guard.map(function (guard) { return bind(guard, instance, match, key); })
: bind(guard, instance, match, key)
}
});
return flatten(reverse ? guards.reverse() : guards)
}

function extractGuard (
def,
key
) {
if (typeof def !== 'function') {
// extend now so that global mixins are applied.
def = _Vue.extend(def);
}
return def.options[key]
}

function extractLeaveGuards (deactivated) {
return extractGuards(deactivated, 'beforeRouteLeave', bindGuard, true)
}

function extractUpdateHooks (updated) {
return extractGuards(updated, 'beforeRouteUpdate', bindGuard)
}

function bindGuard (guard, instance) {
if (instance) {
return function boundRouteGuard () {
return guard.apply(instance, arguments)
}
}
}

function extractEnterGuards (
activated,
cbs,
isValid
) {
return extractGuards(activated, 'beforeRouteEnter', function (guard, _, match, key) {
return bindEnterGuard(guard, match, key, cbs, isValid)
})
}

function bindEnterGuard (
guard,
match,
key,
cbs,
isValid
) {
return function routeEnterGuard (to, from, next) {
return guard(to, from, function (cb) {
next(cb);
if (typeof cb === 'function') {
cbs.push(function () {
// #750
// if a router-view is wrapped with an out-in transition,
// the instance may not have been registered at this time.
// we will need to poll for registration until current route
// is no longer valid.
poll(cb, match.instances, key, isValid);
});
}
})
}
}

function poll (
cb, // somehow flow cannot infer this is a function
instances,
key,
isValid
) {
if (instances[key]) {
cb(instances[key]);
} else if (isValid()) {
setTimeout(function () {
poll(cb, instances, key, isValid);
}, 16);
}
}

/* */


var HTML5History = (function (History$$1) {
function HTML5History (router, base) {
var this$1 = this;

History$$1.call(this, router, base);

var expectScroll = router.options.scrollBehavior;

if (expectScroll) {
setupScroll();
}

var initLocation = getLocation(this.base);
window.addEventListener('popstate', function (e) {
var current = this$1.current;

// Avoiding first `popstate` event dispatched in some browsers but first
// history route not updated since async guard at the same time.
var location = getLocation(this$1.base);
if (this$1.current === START && location === initLocation) {
return
}

this$1.transitionTo(location, function (route) {
if (expectScroll) {
handleScroll(router, route, current, true);
}
});
});
}

if ( History$$1 ) HTML5History.__proto__ = History$$1;
HTML5History.prototype = Object.create( History$$1 && History$$1.prototype );
HTML5History.prototype.constructor = HTML5History;

HTML5History.prototype.go = function go (n) {
window.history.go(n);
};

HTML5History.prototype.push = function push (location, onComplete, onAbort) {
var this$1 = this;

var ref = this;
var fromRoute = ref.current;
this.transitionTo(location, function (route) {
pushState(cleanPath(this$1.base + route.fullPath));
handleScroll(this$1.router, route, fromRoute, false);
onComplete && onComplete(route);
}, onAbort);
};

HTML5History.prototype.replace = function replace (location, onComplete, onAbort) {
var this$1 = this;

var ref = this;
var fromRoute = ref.current;
this.transitionTo(location, function (route) {
replaceState(cleanPath(this$1.base + route.fullPath));
handleScroll(this$1.router, route, fromRoute, false);
onComplete && onComplete(route);
}, onAbort);
};

HTML5History.prototype.ensureURL = function ensureURL (push) {
if (getLocation(this.base) !== this.current.fullPath) {
var current = cleanPath(this.base + this.current.fullPath);
push ? pushState(current) : replaceState(current);
}
};

HTML5History.prototype.getCurrentLocation = function getCurrentLocation () {
return getLocation(this.base)
};

return HTML5History;
}(History));

function getLocation (base) {
var path = window.location.pathname;
if (base && path.indexOf(base) === 0) {
path = path.slice(base.length);
}
return (path || '/') + window.location.search + window.location.hash
}

/* */


var HashHistory = (function (History$$1) {
function HashHistory (router, base, fallback) {
History$$1.call(this, router, base);
// check history fallback deeplinking
if (fallback && checkFallback(this.base)) {
return
}
ensureSlash();
}

if ( History$$1 ) HashHistory.__proto__ = History$$1;
HashHistory.prototype = Object.create( History$$1 && History$$1.prototype );
HashHistory.prototype.constructor = HashHistory;

// this is delayed until the app mounts
// to avoid the hashchange listener being fired too early
HashHistory.prototype.setupListeners = function setupListeners () {
var this$1 = this;

var router = this.router;
var expectScroll = router.options.scrollBehavior;
var supportsScroll = supportsPushState && expectScroll;

if (supportsScroll) {
setupScroll();
}

window.addEventListener(supportsPushState ? 'popstate' : 'hashchange', function () {
var current = this$1.current;
if (!ensureSlash()) {
return
}
this$1.transitionTo(getHash(), function (route) {
if (supportsScroll) {
handleScroll(this$1.router, route, current, true);
}
if (!supportsPushState) {
replaceHash(route.fullPath);
}
});
});
};

HashHistory.prototype.push = function push (location, onComplete, onAbort) {
var this$1 = this;

var ref = this;
var fromRoute = ref.current;
this.transitionTo(location, function (route) {
pushHash(route.fullPath);
handleScroll(this$1.router, route, fromRoute, false);
onComplete && onComplete(route);
}, onAbort);
};

HashHistory.prototype.replace = function replace (location, onComplete, onAbort) {
var this$1 = this;

var ref = this;
var fromRoute = ref.current;
this.transitionTo(location, function (route) {
replaceHash(route.fullPath);
handleScroll(this$1.router, route, fromRoute, false);
onComplete && onComplete(route);
}, onAbort);
};

HashHistory.prototype.go = function go (n) {
window.history.go(n);
};

HashHistory.prototype.ensureURL = function ensureURL (push) {
var current = this.current.fullPath;
if (getHash() !== current) {
push ? pushHash(current) : replaceHash(current);
}
};

HashHistory.prototype.getCurrentLocation = function getCurrentLocation () {
return getHash()
};

return HashHistory;
}(History));

function checkFallback (base) {
var location = getLocation(base);
if (!/^\/#/.test(location)) {
window.location.replace(
cleanPath(base + '/#' + location)
);
return true
}
}

function ensureSlash () {
var path = getHash();
if (path.charAt(0) === '/') {
return true
}
replaceHash('/' + path);
return false
}

function getHash () {
// We can't use window.location.hash here because it's not
// consistent across browsers - Firefox will pre-decode it!
var href = window.location.href;
var index = href.indexOf('#');
return index === -1 ? '' : href.slice(index + 1)
}

function getUrl (path) {
var href = window.location.href;
var i = href.indexOf('#');
var base = i >= 0 ? href.slice(0, i) : href;
return (base + "#" + path)
}

function pushHash (path) {
if (supportsPushState) {
pushState(getUrl(path));
} else {
window.location.hash = path;
}
}

function replaceHash (path) {
if (supportsPushState) {
replaceState(getUrl(path));
} else {
window.location.replace(getUrl(path));
}
}

/* */


var AbstractHistory = (function (History$$1) {
function AbstractHistory (router, base) {
History$$1.call(this, router, base);
this.stack = [];
this.index = -1;
}

if ( History$$1 ) AbstractHistory.__proto__ = History$$1;
AbstractHistory.prototype = Object.create( History$$1 && History$$1.prototype );
AbstractHistory.prototype.constructor = AbstractHistory;

AbstractHistory.prototype.push = function push (location, onComplete, onAbort) {
var this$1 = this;

this.transitionTo(location, function (route) {
this$1.stack = this$1.stack.slice(0, this$1.index + 1).concat(route);
this$1.index++;
onComplete && onComplete(route);
}, onAbort);
};

AbstractHistory.prototype.replace = function replace (location, onComplete, onAbort) {
var this$1 = this;

this.transitionTo(location, function (route) {
this$1.stack = this$1.stack.slice(0, this$1.index).concat(route);
onComplete && onComplete(route);
}, onAbort);
};

AbstractHistory.prototype.go = function go (n) {
var this$1 = this;

var targetIndex = this.index + n;
if (targetIndex < 0 || targetIndex >= this.stack.length) {
return
}
var route = this.stack[targetIndex];
this.confirmTransition(route, function () {
this$1.index = targetIndex;
this$1.updateRoute(route);
});
};

AbstractHistory.prototype.getCurrentLocation = function getCurrentLocation () {
var current = this.stack[this.stack.length - 1];
return current ? current.fullPath : '/'
};

AbstractHistory.prototype.ensureURL = function ensureURL () {
// noop
};

return AbstractHistory;
}(History));

/* */

var VueRouter = function VueRouter (options) {
if ( options === void 0 ) options = {};

this.app = null;
this.apps = [];
this.options = options;
this.beforeHooks = [];
this.resolveHooks = [];
this.afterHooks = [];
this.matcher = createMatcher(options.routes || [], this);

var mode = options.mode || 'hash';
this.fallback = mode === 'history' && !supportsPushState && options.fallback !== false;
if (this.fallback) {
mode = 'hash';
}
if (!inBrowser) {
mode = 'abstract';
}
this.mode = mode;

switch (mode) {
case 'history':
this.history = new HTML5History(this, options.base);
break
case 'hash':
this.history = new HashHistory(this, options.base, this.fallback);
break
case 'abstract':
this.history = new AbstractHistory(this, options.base);
break
default:
{
assert(false, ("invalid mode: " + mode));
}
}
};

var prototypeAccessors = { currentRoute: { configurable: true } };

VueRouter.prototype.match = function match (
raw,
current,
redirectedFrom
) {
return this.matcher.match(raw, current, redirectedFrom)
};

prototypeAccessors.currentRoute.get = function () {
return this.history && this.history.current
};

VueRouter.prototype.init = function init (app /* Vue component instance */) {
var this$1 = this;

"development" !== 'production' && assert(
install.installed,
"not installed. Make sure to call `Vue.use(VueRouter)` " +
"before creating root instance."
);

this.apps.push(app);

// main app already initialized.
if (this.app) {
return
}

this.app = app;

var history = this.history;

if (history instanceof HTML5History) {
history.transitionTo(history.getCurrentLocation());
} else if (history instanceof HashHistory) {
var setupHashListener = function () {
history.setupListeners();
};
history.transitionTo(
history.getCurrentLocation(),
setupHashListener,
setupHashListener
);
}

history.listen(function (route) {
this$1.apps.forEach(function (app) {
app._route = route;
});
});
};

VueRouter.prototype.beforeEach = function beforeEach (fn) {
return registerHook(this.beforeHooks, fn)
};

VueRouter.prototype.beforeResolve = function beforeResolve (fn) {
return registerHook(this.resolveHooks, fn)
};

VueRouter.prototype.afterEach = function afterEach (fn) {
return registerHook(this.afterHooks, fn)
};

VueRouter.prototype.onReady = function onReady (cb, errorCb) {
this.history.onReady(cb, errorCb);
};

VueRouter.prototype.onError = function onError (errorCb) {
this.history.onError(errorCb);
};

VueRouter.prototype.push = function push (location, onComplete, onAbort) {
this.history.push(location, onComplete, onAbort);
};

VueRouter.prototype.replace = function replace (location, onComplete, onAbort) {
this.history.replace(location, onComplete, onAbort);
};

VueRouter.prototype.go = function go (n) {
this.history.go(n);
};

VueRouter.prototype.back = function back () {
this.go(-1);
};

VueRouter.prototype.forward = function forward () {
this.go(1);
};

VueRouter.prototype.getMatchedComponents = function getMatchedComponents (to) {
var route = to
? to.matched
? to
: this.resolve(to).route
: this.currentRoute;
if (!route) {
return []
}
return [].concat.apply([], route.matched.map(function (m) {
return Object.keys(m.components).map(function (key) {
return m.components[key]
})
}))
};

VueRouter.prototype.resolve = function resolve (
to,
current,
append
) {
var location = normalizeLocation(
to,
current || this.history.current,
append,
this
);
var route = this.match(location, current);
var fullPath = route.redirectedFrom || route.fullPath;
var base = this.history.base;
var href = createHref(base, fullPath, this.mode);
return {
location: location,
route: route,
href: href,
// for backwards compat
normalizedTo: location,
resolved: route
}
};

VueRouter.prototype.addRoutes = function addRoutes (routes) {
this.matcher.addRoutes(routes);
if (this.history.current !== START) {
this.history.transitionTo(this.history.getCurrentLocation());
}
};

Object.defineProperties( VueRouter.prototype, prototypeAccessors );

function registerHook (list, fn) {
list.push(fn);
return function () {
var i = list.indexOf(fn);
if (i > -1) { list.splice(i, 1); }
}
}

function createHref (base, fullPath, mode) {
var path = mode === 'hash' ? '#' + fullPath : fullPath;
return base ? cleanPath(base + '/' + path) : path
}

VueRouter.install = install;
VueRouter.version = '3.0.1';

if (inBrowser && window.Vue) {
window.Vue.use(VueRouter);
}

return VueRouter;

})));

View Code

vue-router的使用要分为六步：

　　1.引用js组件

　　2.定义组件

　　3.将组件注册到路由中

　　4.在vue中使用路由

　　5.使用连接来设置路由

　　6.设置占位

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4 <meta charset="UTF-8">
 5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 7 <title>Document</title>   
 8 <script src="../vue2.4.4.js"></script>
 9 <!-- 1.引入文件 -->
10 <script src="../vue-router.js"></script>
11 </head>
12 
13 <body>
14 <!-- 定义一个vue的管理区块，（MVVM中的View） -->
15 <div id="app">
16     <!-- 5.这个是vueRouter中为我们提供的一个超链接，可以帮助我们点击，
17     点击以后跳转到相应的组件中
18           并且在组件中的内容展示在占位router-view -->
19     <router-link to="/login">登录</router-link>
20     <router-link to="/register">注册</router-link>
21     <!--  6.设置占位 -->
22    <router-view></router-view>
23 </div>
24 
25 </body>
26 
27 <script>
28     //2.定义组件
29     var login = Vue.extend({
30         template:"<h1>login</h1>"
31     });
32     var register = Vue.extend({
33         template:"<h1>register</h1>"
34     });
35 
36     // 3.将组件注册到路由中
37     var vueRouter = new VueRouter({//注册路由了
38         routes:[
39             {path:"/login",component:login},
40             {path:"/register",component:register},
41 
42         ]//数组，说明这里可以注册多个路由
43     });
44 
45     // 实例化vue对象（MVVM中的View Model）
46     new Vue({
47         // vm控制的区块为id为app的div，此div中的所有vue指令均可以被vm解析
48         el:'#app',
49         data:{
50         // 数据 （MVVM中的Model）   
51         },
52         // 4.在vue中使用路由
        router:vueRouter
54 
55     })
56 </script>
57 </html>

二.使用vue中的路由给组件传递参数

参数传递分两步:

　　1.第一步修改路由:

　　　　在路由的路径后面加一个"/:" +键名

　　2.将来在设置路由的连接上必须传入这个参数

　　　　参数接受只要一步

　　　　通过以下代码接收：

　　　　 this.$route.params.name

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4 <meta charset="UTF-8">
 5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 7 <title>Document</title>   
 8 <script src="../vue2.4.4.js"></script>
 9 <!-- 1.引入文件 -->
10 <script src="../vue-router.js"></script>
11 </head>
12 
13 <body>
14 <!-- 定义一个vue的管理区块，（MVVM中的View） -->
15 <div id="app">
16     <!-- 5.这个是vueRouter中为我们提供的一个超链接，可以帮助我们点击，
17     点击以后跳转到相应的组件中
18           并且在组件中的内容展示在占位router-view -->
19     <router-link to="/login/nack">登录</router-link>
20     <router-link to="/register/20">注册</router-link>
21     <!--  6.设置占位 -->
22    <router-view></router-view>
23 </div>
24 
25 </body>
26 
27 <script>
28     //2.定义组件
29     var login = Vue.extend({
30         template:"<h1>login</h1>",
31         mounted:function(){
32             var name = this.$route.params.name;
33             alert(name);
34         }
35     });
36     var register = Vue.extend({
37         template:"<h1>register</h1>",
38         mounted:function(){
39             var age = this.$route.params.age;
40             alert(age);
41         }
42     });
43 
44     // 3.将组件注册到路由中
45     var vueRouter = new VueRouter({//注册路由了
46         routes:[
47             {path:"/login/:name",component:login},
48             {path:"/register/:age",component:register},
49 
50         ]//数组，说明这里可以注册多个路由
51     });
52 
53     // 实例化vue对象（MVVM中的View Model）
54     new Vue({
55         // vm控制的区块为id为app的div，此div中的所有vue指令均可以被vm解析
56         el:'#app',
57         data:{
58         // 数据 （MVVM中的Model）   
59         },
60         // 4.在vue中使用路由
        router:vueRouter
62 
63     })
64 </script>
65 </html>

三.使用嵌套路由完成路由设置

嵌套组件：

　　1.修改路由

　　2.修改链接

　　3.在父组件中添加占位

 1 <!DOCTYPE html>
 2 <html lang="en">
 3 <head>
 4 <meta charset="UTF-8">
 5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
 6 <meta http-equiv="X-UA-Compatible" content="ie=edge">
 7 <title>Document</title>   
 8 <script src="../vue2.4.4.js"></script>
 9 <!-- 1.引入文件 -->
10 <script src="../vue-router.js"></script>
11 </head>
12 
13 <body>
14 <!-- 定义一个vue的管理区块，（MVVM中的View） -->
15 <div id="app">
16     <!-- 5.这个是vueRouter中为我们提供的一个超链接，可以帮助我们点击，
17     点击以后跳转到相应的组件中
18           并且在组件中的内容展示在占位router-view -->
19     <router-link to="/account/login">登录</router-link>
20     <router-link to="/account/register">注册</router-link>
21     <!--  6.设置占位 -->
22    <router-view></router-view>
23 </div>
24 
25 
26 </body>
27 
28 <script>
29     //2.定义组件
30     var account = Vue.extend({
31         template:"<h1>account<router-view></router-view></h1>",
32     });
33     var login = Vue.extend({
34         template:"<h1>login</h1>",
35     });
36     var register = Vue.extend({
37         template:"<h1>register</h1>",
38     });
39 
40     // 3.将组件注册到路由中
41     var vueRouter = new VueRouter({//注册路由了
42         routes:[
43             {path:"/",redirect:"/account"},
44             // 在routers中只注册一个路由，将login和register加入这个路由中当作它的子路由(子组件)
45             {path:"/account",component:account,children:[
46                 {path:"login",component:login},
47                 {path:"register",component:register}
48             ]},
49         ]//数组，说明这里可以注册多个路由
50     });
51 
52     // 实例化vue对象（MVVM中的View Model）
53     new Vue({
54         // vm控制的区块为id为app的div，此div中的所有vue指令均可以被vm解析
55         el:'#app',
56         data:{
57         // 数据 （MVVM中的Model）   
58         },
59         // 4.在vue中使用路由
60         router:vueRouter
61     })
62 </script>
63 </html>

一.vue路由的基本使用

为什么需要路由?

因为我们通过component切换组件无法给组件传递参数

二.使用vue中的路由给组件传递参数

三.使用嵌套路由完成路由设置

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