Angular 入门教程系列:21:使用cli快速开发

angular-cli是angular开发团队自行维护的一个开发工具,用于快速生成项目或者组件的框架以提高效率,而在此基础上又衍生出了很多的框架进行进一步的封装,比如国内的ng-zorro-antd以及ng-alian等。

概要信息

项目 说明
官网 https://cli.angular.io/
开源/闭源 开源
License类别 MIT License
代码管理地址 https://github.com/angular/angular-cli
开发语言 typescript
当前稳定版本 6.0.8
更新频度 平均每月数次

安装依赖

cli脚手架对node和npm有如下要求

项目 版本要求
node
=8.9
npm
=5.5.1

安装方式

使用如下两种方式进行安装

安装最新版本的cli: npm install -g @angular/cli
安装制定版本的cli: npm install -g @angular/[email protected]

设定yarn

安装yarn,详细可参看:https://mp.csdn.net/mdeditor/81063463

使用angular-cli

使用angular-cli,只需要如下步骤即可快速搭建前端框架

步骤 命令 说明
步骤1 ng new demo1 –skip-install 创建angular的项目骨架
步骤2 yarn或者yarn install 如果在步骤1中不使用skip-install选项,其会立即更新相关的package
步骤3 ng serve 启动服务
步骤4 确认结果 -

步骤1

liumiaocn:angualr liumiao$ ng new demo1 --skip-install
  create demo1/README.md (1021 bytes)
  create demo1/.angular-cli.json (1240 bytes)
  create demo1/.editorconfig (245 bytes)
  create demo1/.gitignore (544 bytes)
  create demo1/src/assets/.gitkeep (0 bytes)
  create demo1/src/environments/environment.prod.ts (51 bytes)
  create demo1/src/environments/environment.ts (387 bytes)
  create demo1/src/favicon.ico (5430 bytes)
  create demo1/src/index.html (292 bytes)
  create demo1/src/main.ts (370 bytes)
  create demo1/src/polyfills.ts (3114 bytes)
  create demo1/src/styles.css (80 bytes)
  create demo1/src/test.ts (642 bytes)
  create demo1/src/tsconfig.app.json (211 bytes)
  create demo1/src/tsconfig.spec.json (283 bytes)
  create demo1/src/typings.d.ts (104 bytes)
  create demo1/e2e/app.e2e-spec.ts (287 bytes)
  create demo1/e2e/app.po.ts (208 bytes)
  create demo1/e2e/tsconfig.e2e.json (235 bytes)
  create demo1/karma.conf.js (923 bytes)
  create demo1/package.json (1290 bytes)
  create demo1/protractor.conf.js (722 bytes)
  create demo1/tsconfig.json (363 bytes)
  create demo1/tslint.json (3012 bytes)
  create demo1/src/app/app.module.ts (316 bytes)
  create demo1/src/app/app.component.css (0 bytes)
  create demo1/src/app/app.component.html (1141 bytes)
  create demo1/src/app/app.component.spec.ts (986 bytes)
  create demo1/src/app/app.component.ts (207 bytes)
Project 'demo1' successfully created.
liumiaocn:angualr liumiao$
详细的的各个文件的说明,可以参看:https://blog.csdn.net/liumiaocn/article/details/78366404

步骤2

liumiaocn:demo1 liumiao$ yarn 
yarn install v1.7.0
info No lockfile found.
[1/4] ?  Resolving packages...
warning @angular/cli > autoprefixer > browserslist@2.11.3: Browserslist 2 could fail on reading Browserslist >3.0 config used in other tools.
warning karma > log4js > loggly > request > node-uuid@1.4.8: Use uuid module instead
warning karma > log4js > nodemailer@2.7.2: All versions below 4.0.1 of Nodemailer are deprecated. See https://nodemailer.com/status/
warning karma > socket.io > engine.io > uws@9.14.0: stop using this version
warning karma > log4js > nodemailer > mailcomposer@4.0.1: This project is unmaintained
warning karma > log4js > nodemailer > socks@1.1.9: If using 2.x branch, please upgrade to at least 2.1.6 to avoid a serious bug with socket data flow and an import issue introduced in 2.1.0
warning karma > log4js > mailgun-js > proxy-agent > pac-proxy-agent > socks-proxy-agent > socks@1.1.10: If using 2.x branch, please upgrade to at least 2.1.6 to avoid a serious bug with socket data flow and an import issue introduced in 2.1.0
warning karma > log4js > nodemailer > mailcomposer > buildmail@4.0.1: This project is unmaintained
warning karma-coverage-istanbul-reporter > istanbul-api > istanbul-lib-hook@1.2.1: 1.2.0 should have been a major version bump
[2/4] ?  Fetching packages...
[3/4] ?  Linking dependencies...
[4/4] ?  Building fresh packages...
success Saved lockfile.
✨  Done in 202.07s.
liumiaocn:demo1 liumiao$

可以看出,此框架中所使用到的angular的版本为5.2.11, typescript为2.5.3,webpack为3.11.0

liumiaocn:demo1 liumiao$ ng version

    _                      _                 ____ _     ___
   / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
  / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
 / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
/_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
               |___/

Angular CLI: 1.7.4
Node: 8.9.1
OS: darwin x64
Angular: 5.2.11
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.7.4
@angular-devkit/build-optimizer: 0.3.2
@angular-devkit/core: 0.3.2
@angular-devkit/schematics: 0.3.2
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.2
@schematics/angular: 0.3.2
@schematics/package-update: 0.3.2
typescript: 2.5.3
webpack: 3.11.0
liumiaocn:demo1 liumiao$ 

步骤3

liumiaocn:demo1 liumiao$ ng serve
** NG Live Development Server is listening on localhost:4200, open your browser on http://localhost:4200/ **
Date: 2018-07-15T09:43:38.325Z                                                          
Hash: 12bf8b7b262fc67c2457
Time: 5601ms
chunk {inline} inline.bundle.js (inline) 3.85 kB [entry] [rendered]
chunk {main} main.bundle.js (main) 17.9 kB [initial] [rendered]
chunk {polyfills} polyfills.bundle.js (polyfills) 555 kB [initial] [rendered]
chunk {styles} styles.bundle.js (styles) 41.5 kB [initial] [rendered]
chunk {vendor} vendor.bundle.js (vendor) 7.43 MB [initial] [rendered]

webpack: Compiled successfully.

步骤4

这里写图片描述

设定选项

除了skip-install之外,ng new还有很多有用的选项,比如

选项 缩写 说明
–dry-run -d -dryRun 空跑,会列出创建的文件但是不会实际创建
–verbose -v -verbose 输出详细的日志信息
–directory -dir 制定项目的目录名称,缺省为项目名称
–inline-style -is 使用内连样式
–inline-template -it 使用内连模版样式
–version - 制定Angular CLI使用的版本
–routing - 创建带有路由的模块,并添加到根模块中
–prefix -p 设定选择器制定前缀,缺省为app

–style (string) (Default: css) The file extension to be used for style files.
| –skip-tests |-st|跳过创建测试文件
| –skip-install|-|跳过安装依赖包
| –skip-git |-sg|跳过初期化git仓库

ng new VS ng init

除了ng new demo1 的方式,使用ng init也可以创建,使用方式基本一致,不同之处在于ng init会在当前目录初始化项目,而不会创建新的目录。

参考文献

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转载自blog.csdn.net/liumiaocn/article/details/81068830