How to update Angular cli version for existing application?

Question

我正在使用npm start运行我的angular 2应用程序，这里ng服务，ng build commanda无法正常工作，我尝试构建此应用程序，它显示错误消息ng build error message

Answer 1

If u run this command

npm install -g @angular/cli

it will automatically download the latest version of angular @ before angular is mainly used to get the latest version

Answer 2

Go to your application's package.json file where you can find devDependencies and you will see your application cli version. you can change the version there and you can use npm install again.

Answer 3

在package.json文件所在的项目根目录中运行ng build