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# 开发环境
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## 安装node.js
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- 官网下载免安装版压缩包
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[**14.17.5**源码与安装包](https://nodejs.org/en/download/)
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[长期稳定版本与最新版本](https://nodejs.org/zh-cn/)
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[历史版本](https://nodejs.org/dist/)
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- 配置环境变量
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配置node_home
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将node_home配置到path环境变量
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使用 node -v 查看是否安装成功
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## 安装cnpm并使用淘宝镜像（非必须）
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```shell
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npm install -g cnpm --registry=https://registry.npm.taobao.org
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npm uninstall -g cnpm
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```
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## 安装yarn（非必须）
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`npm install -g yarn`
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## 安装vue脚手架（非必须）
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```shell
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npm uninstall @vue-cli //卸载1.0或2.0版本
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npm install @vue/cli //安装最新版本
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npm install @vue/cli@4.0.5 //安装指定版本
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```
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> vue/cli可以帮助快速搭建vue项目,管理项目依赖等,大大降低了webpack的使用难度
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>
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> 如果需要从零开始搭建vue项目建议暗转, 如果只是在已有vue项目上进行迭代开发则无安装必要
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## 最后一个忘记干啥用的了,照做就行
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将powershell切换为管理员模式,执行命令
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```shell
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Start-Process powershell -Verb runAs
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set-ExecutionPolicy RemoteSigned
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y
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```
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