How should I learn Angular2?

To install the environment, you first need to install cli. Remember to install it globally

#angular cli安装
npm install -g angular-cli

After cli is installed, we can use the instructions starting with ng (just understand it as npm) ), create the project below

#安装相关项目包，具体包package.json里的dependencies和devDependencies有体现
#下面步骤用npm install也可以
ng init

After the package is installed, we can start our project. After execution, we can open

in http://localhost:4200

#下面步骤用npm start也可以
ng serve

If you want to open multiple projects for colleagues, you can modify the project port number

#修改默认端口4200 -> 修改为（3000） 
ng serve --port 3000 
或 ng serve -p 3000

There is also a method to modify the project port but it is not recommended

Project directory \node_modules\angular-cli\lib\config\schema.json
#Change "default": 4200 in server to "default": 3000

Last package release

ng build

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