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Previous: (36) Vue solves Ajax cross-domain problems
First look at a github search case.
There is a search box, enter the relevant user name, you can fuzzy search out the user, and display it below
Step 1: We used the third-party style library bootstrap. First, we need to see a css folder in the public folder, put it into the style library, and then import it on the index.html page
<!-- 引入第三方样式 -->
<link rel="stylesheet" href="<%=BASE_URL%>css/bootstrap.css">
Step 2: Split the components, search and text box as a component Search, and display users as a component List
axios implementation
General Ajax request library, officially recommended, widely used
axios installation command: npm i axios
App component
<template>
<div class="container">
<Search/>
<List/>
</div>
</template>
<script>
import Search from "@/components/Search";
import List from "@/components/List";
export default {
name: "App",
components: {
List, Search},
}
</script>
<style>
</style>
Seach component
<template>
<section class="jumbotron">
<h3 class="jumbotron-heading">Search Github Users</h3>
<div>
<input type="text" placeholder="enter the name you search" v-model="keyWord"/>
<button @click="searchUsers">Search</button>
</div>
</section>
</template>
<script>
import axios from "axios";
export default {
// eslint-disable-next-line vue/multi-word-component-names
name: "Search",
data(){
return{
keyWord:''
}
},
methods:{
searchUsers(){
if (this.keyWord === ""){
alert("输入不能为空")
return
}
//请求前更新List的数据
this.$bus.$emit('updateListData',{
isFirst:false,isLoading:true,errMsg:'',users:[]})
axios.get(`https://api.github.com/search/users?q=${
this.keyWord}`).then(
response => {
//请求成功后更新List的数据
this.$bus.$emit('updateListData',{
isLoading:false,errMsg:'',users:response.data.items})
},
error => {
console.log('请求失败',error.message)
//请求后更新List的数据
this.$bus.$emit('updateListData',{
isLoading:false,errMsg:error.message,users:[]})
}
)
}
}
}
</script>
<style scoped>
</style>
List component
<template>
<div class="row">
<!--展示用户列表-->
<div v-show="info.users.length" class="card" v-for="user in info.users" :key="user.login">
<a :href="user.html_url" target="_blank">
<img :src="user.avatar_url" style='width: 100px'/>
</a>
<p class="card-text">{
{
user.login}}</p>
</div>
<!--展示欢迎词-->
<h2 v-show="info.isFirst">欢迎使用</h2>
<!--展示加载中-->
<h2 v-show="info.isLoading">加载中....</h2>
<!--展示错误信息-->
<h2 v-show="info.errMsg">{
{
info.errMsg}}</h2>
</div>
</template>
<script>
export default {
// eslint-disable-next-line vue/multi-word-component-names
name: "List",
data(){
return{
info: {
isFirst:true,
isLoading:false,
errMsg:'',
users:[]
}
}
},
mounted() {
this.$bus.$on('updateListData',(dataObj)=>{
this.info = {
...this.info,...dataObj}
})
}
}
</script>
<style scoped>
.album {
min-height: 50rem; /* Can be removed; just added for demo purposes */
padding-top: 3rem;
padding-bottom: 3rem;
background-color: #f7f7f7;
}
.card {
float: left;
width: 33.333%;
padding: .75rem;
margin-bottom: 2rem;
border: 1px solid #efefef;
text-align: center;
}
.card > img {
margin-bottom: .75rem;
border-radius: 100px;
}
.card-text {
font-size: 85%;
}
</style>
vue-resource implementation
vue-resource: It is a plug-in library that encapsulates ajax, and its usage is similar to that of axios.
vue-resource installation command: npm i vue-resource
After using this plugin, there are more Vue and VueComponent $http, through $http.getor $http.postAjax to request
the vue plugin library, vue1.x is widely used, and the official is no longer maintained .
After installation, you need to import it in mian.js
import vueResource from "vue-resource";
Vue.use(vueResource)
The Seach component is changed to:
<template>
<section class="jumbotron">
<h3 class="jumbotron-heading">Search Github Users</h3>
<div>
<input type="text" placeholder="enter the name you search" v-model="keyWord"/>
<button @click="searchUsers">Search</button>
</div>
</section>
</template>
<script>
import axios from "axios";
export default {
// eslint-disable-next-line vue/multi-word-component-names
name: "Search",
data(){
return{
keyWord:''
}
},
methods:{
searchUsers(){
if (this.keyWord === ""){
alert("输入不能为空")
return
}
//请求前更新List的数据
this.$bus.$emit('updateListData',{
isFirst:false,isLoading:true,errMsg:'',users:[]})
this.$http.get(`https://api.github.com/search/users?q=${
this.keyWord}`).then(
response => {
//请求成功后更新List的数据
this.$bus.$emit('updateListData',{
isLoading:false,errMsg:'',users:response.data.items})
},
error => {
console.log('请求失败',error.message)
//请求后更新List的数据
this.$bus.$emit('updateListData',{
isLoading:false,errMsg:error.message,users:[]})
}
)
}
}
}
</script>
<style scoped>
</style>