vue全家桶安装以及修改webpack配置新增vue项目启动方式

一、安装node环境（自带npm）

下载地址

二、替换下载源

// 淘宝 NPM 镜像
npm install -g cnpm --registry=https://registry.npm.taobao.org

三、全局安装vue-cli脚手架

npm install --global vue-cli

四、vue2.* webpack模板下载

vue init webpack vue_project

五、安装vuex

npm install vuex --save

在main.js中注入vuex

// vuex
import Vuex from 'vuex'
Vue.use(Vuex)

六、安装axios

npm install axios --save

在main.js导入并全局使用

// axios请求
import axios from "axios"
Vue.prototype.$axios = axios

七、安装elementUI

npm install element-ui --save

在main.js中引入elementUI

// element样式框架
import ElementUI from 'element-ui'
import 'element-ui/lib/theme-chalk/index.css'

Vue.use(ElementUI)

八、vue项目使用sass

npm install sass-loader --save-dev
npm install node-sass --save-dev

//连写
npm install sass-loader node-sass --save-dev

想要使用sass，需要修改build目录下的webpack.base.conf.js文件，增加以下规则：

{
test: /\.sass$/,
loaders: ['style', 'css', 'sass',"scss"]
}

在组件中使用sass语法

<style lang="scss">

$size:50px;
html {
font-size: $size;
}

</style>

或者外部引用：

<style lang="scss">

@import "./main.scss"
// 或者
// @import url(./main.scss);

</style>

 九、修改webpack配置，新增项目启动方式

以 pred 为例：

1，首先更改package.json配置

2，在build目录下增加pred.js,内容和build.js文件相同，更改以下三处变量即可

3.修改build目录下webpack.prod.conf.js配置，替换如下代码：

'use strict'
const path = require('path')
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const ExtractTextPlugin = require('extract-text-webpack-plugin')
const OptimizeCSSPlugin = require('optimize-css-assets-webpack-plugin')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin')

/** 删除内容
const env = process.env.NODE_ENV === 'testing'
? require('../config/test.env')
: require('../config/prod.env')
*/

// 替换成
const ENV_MAP = {
'testing': require('../config/test.env'),
'production': require('../config/prod.env'),
'pred': require('../config/pred.env')
}
const env = process.env.NODE_ENV = ENV_MAP[process.env.NODE_ENV];

4.在config目录新增 pred.env.js文件，内容如下

'use strict'
module.exports = {
NODE_ENV: '"pred"'
}

5.修改config目录下的index.js，复制build对象并修改成pred

build: {
// Template for index.html
index: path.resolve(__dirname, '../dist/index.html'),

// Paths
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static',
assetsPublicPath: '/',

/**
* Source Maps
*/

productionSourceMap: true,
// https://webpack.js.org/configuration/devtool/#production
devtool: '#source-map',

// Gzip off by default as many popular static hosts such as
// Surge or Netlify already gzip all static assets for you.
// Before setting to `true`, make sure to:
// npm install --save-dev compression-webpack-plugin
productionGzip: false,
productionGzipExtensions: ['js', 'css'],

// Run the build command with an extra argument to
// View the bundle analyzer report after build finishes:
// `npm run build --report`
// Set to `true` or `false` to always turn it on or off
bundleAnalyzerReport: process.env.npm_config_report
},
pred: {
// Template for index.html
index: path.resolve(__dirname, '../dist/index.html'),

// Paths
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static',
assetsPublicPath: '/',

/**
* Source Maps
*/

productionSourceMap: true,
// https://webpack.js.org/configuration/devtool/#production
devtool: '#source-map',

// Gzip off by default as many popular static hosts such as
// Surge or Netlify already gzip all static assets for you.
// Before setting to `true`, make sure to:
// npm install --save-dev compression-webpack-plugin
productionGzip: false,
productionGzipExtensions: ['js', 'css'],

// Run the build command with an extra argument to
// View the bundle analyzer report after build finishes:
// `npm run build --report`
// Set to `true` or `false` to always turn it on or off
bundleAnalyzerReport: process.env.npm_config_report
}

6，控制台输入 npm run pred，看到如下内容即成功：