无法将"ng"识别为内部或外部命令 [英] 'ng' is not recognized as an internal or external command

问题描述

在删除了先前版本的Node.js之后，现在我已经安装了它的最新版本.我还安装了@ angular/cli.

After removing the previous version of Node.js , now i have installed the latest version of it. I have also installed @angular/cli .

但是当我尝试通过CLI创建新项目时，出现错误

But when i am trying to create new Project through CLI , i am getting error

'ng'不被识别为内部或外部命令.

'ng' is not recognized as an internal or external command.

我已经多次使用命令卸载了Node.js，并手动卸载了所有文件夹，但是在重新安装后仍然会卸载它.

I have uninstalled Node.js several time using command and manually all folder but still it coming after fresh installation.

我尝试安装@ angular/cli，但出现错误.

I have tried to install @angular/cli but getting below error.

任何帮助将不胜感激. 预先感谢.

Any help will be much appreciated. Thanks in Advance.

推荐答案

有两个原因.

1. 可能是您在安装Angular(npm install @angular/cli -g)后在PATH上没有npm文件夹

1. It could be you do not have npm folder on your PATH after installing Angular (npm install @angular/cli -g)

在系统或用户环境变量中添加以下条目: ％USERPROFILE％\ AppData \ Roaming \ npm

Append the below entry in your system or user environment variable: %USERPROFILE%\AppData\Roaming\npm

打开一个新的Windows shell，并且ng命令应该可用.

Open a new windows shell and ng command should be available.

ng -v

ng -v

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

Angular CLI: 1.7.2 Node: 6.9.2 OS: win32 x64 Angular: ...

1. 您的Angular版本已损坏.从Angular 5开始，您不需要清理缓存.它可以从腐败中自我修复. 要检查缓存是否已损坏，请使用

1. Your Angular version is corrupted. As of Angular 5 you don't need to clean the cache. It self-heals from corruptions. To check if the cache is corrupted, use

npm缓存验证

npm cache verify

对于较旧版本的Angular，请使用以下命令进行卸载:

For older version of Angular, uninstall using:

npm卸载-g angular-cli npm卸载--save-dev angular-cli

npm uninstall -g angular-cli npm uninstall --save-dev angular-cli

要安装新版本，请使用:

To install new version, use:

npm卸载-g @ angular/cli npm缓存清理 npm install -g @ angular/cli @ latest

npm uninstall -g @angular/cli npm cache clean npm install -g @angular/cli@latest

祝你好运.

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