这里提示webpack-dev-server没有安装，安装下这个模块

npm i webpack-dev-server -D

 

如果再遇到模块没有安装，可以进行安装。

请教还是报错，这种问题解决思路，我百度了两天一直没解决，没思路

你用命名行cd找文件夹找不到，如果你手动能找到吗？

能的话，按shift+右键，然后可以看到在此处打开命令行，从这里打开试试。

我按照vue的官网，没有出错过

最后我还是建议安装cnpm，速度快点。

我怕淘宝镜像出错，就没用，最后用不用都一样

我按照你们视频上一步一步来的还是报错，百度不出来报错和上边一样，是在不知道怎么回事，求赐教

正如 老王爱js 说的，运行 npm i webpack-dev-server -D 这个命令安装一下 webpack-dev-server ， 你可以把这一步的安装信息截图发上来，有可能这一步就有问题（注意运行该命令的时候cd进入项目目录以后再运行安装），如果是因为下载问题，你可以使用yarn这个工具来安装，yarn的安装步骤
1. npm i -g yarn
2.同样进入项目目录 yarn add webpack-dev-server
yarn的安装源和速度要快很多，如果还有什么问题，尽量把详细的步骤以及信息截图发上来

和网上截图对比少一个文件夹

你要是想使用yarn，你得先安装yarn……，具体看我上面得步骤，另外升级一下你得node和npm版本

我把node卸载，从新下载，node安装的是最新版本，vue不是最新版本

用 node -v 和 npm -v 命令看下版本，注意 -v 中间是有空格的

node -v版本号10.     npm -v版本号5.几    vue -V版本号2.8几    都是很正常的

按照以下做一下：
npm i vue-cli@2.9.6 -g

升级下vue-cli

升级后开始创建项目
vue init webpack project

安装后启动
vue run dev

启动过程会报错，说某些模块未找到
例如 “wbepack-dev-server” 不是内部或外部命令，也不是可执行的程序。

这样的话，把这个模块安装下 npm i wbepack-dev-server -D

安装后再启动
vue run dev

在遇到某些模块没找到，还需要安装。

安装了n多个模块还不能启动，那么清除下npm的缓存
npm cache clean -f

清除之后重新安装项目
vue init webpack project

再启动
npm run dev

你试着：npm cache clean -f，然后在项目目录里面 npm i 全部重新安装一下

老师的两种方法都试了，还是webpack-dev-server不是内部文件和命名报错

试了cli直接报错

老师的两种方法都试了，还是webpack-dev-server不是内部文件和命名报错

文件是不是通过root用户创建的 如果是 可以考虑赋值给普通用户再试下

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