导航到要创建应用程序的目录并运行命令:

PATH="节点所在的路径";%PATH%

打开cmd，输入npm install -g @angular/cli 在环境变量中，在用户变量或系统变量中添加“Path”value=C:\Users\your-user\.npm-packages\node_modules\.bin 打开cmd: c:\>cd your-new-project-path .．.\project-path\> ng new my-app 或者ng all-ng-commands

我使用的是win10，只是为了解决这个问题。 在cmd中输入下面的代码:

NPM配置获取前缀

然后复制粘贴你从顶部得到的路径到你的计算机环境变量——>用户变量盒子——> path——> edit——C:\Program Files\nodejs\ node_global，你的路径可能不同。

点击确定并重新打开cmd窗口，输入ng版本，然后它就工作了!干杯!

在系统env设置中，将node_modules下的.bin文件夹中的ng命令路径添加到path变量。

例:将C:\testProject\node_modules\.bin\添加到PATH中

重新启动IDE。

对我来说，它适用于:

npm run ng <command>

I was having the same issue when tried with the syntax "ng new " and solved that simply by updating the existing node version from 5.x.x to 8.x.x. After successful updation of node, the syntax worked perfectly for me. Please update the existing version of node. As it is clearly mentioned in angular documentation that these commands require the node version >= 6.9.x. For reference please check https://angular.io/guide/quickstart. It clearly states "Verify that you are running at least node 6.9.x and npm 3.x.x by running node -v and npm -v in a terminal/console window. Older versions produce errors, but newer versions are fine".