webpack 不是内部或外部命令，也不是可运行的程序或批处理文件 [英] webpack is not recognized as a internal or external command,operable program or batch file

问题描述

我正在学习 React.js，我使用的是 Windows 8 操作系统.我已经导航到我的根文件夹

I am Learning React.js and i am using windows 8 OS.i have navigate to my root folder

1.Created the package.json file by npm init
2. install webpack by npm install -S webpack.now webpack has been downloaded to my modules folder
3. install webpack globally by typing npm install webpack -g
4. i am also having a webpack.config.js in my root folder which contains the source and ouput directory
5. when i type the webpack command i am getting the below error.

webpack 未被识别为内部或外部命令、可运行的程序或批处理文件

推荐答案

我也遇到这个问题很久了.(webpack 全局安装等，但仍然无法识别)原来我没有为 npm 指定环境变量(文件 webpack.cmd 在哪里)所以我添加到我的路径变量

I had this issue for a long time too. (webpack installed globally etc. but still not recognized) It turned out that I haven't specified enviroment variable for npm (where is file webpack.cmd sitting) So I add to my Path variable

%USERPROFILE%\AppData\Roaming\npm\

如果您使用的是 Powershell，您可以输入以下命令来有效地添加到您的路径中:

If you are using Powershell, you can type the following command to effectively add to your path :

[Environment]::SetEnvironmentVariable("Path", "$env:Path;%USERPROFILE%\AppData\Roaming\npm\", "User")

重要提示:不要忘记关闭并重新打开您的 Powershell 窗口以应用此功能.

IMPORTANT : Don't forget to close and re-open your powershell window in order to apply this.

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