去除項(xiàng)目中console.log
安裝一個(gè)插件(babel-plugin-transform-remove-console)在項(xiàng)目build階段移除所有的console信息
打開項(xiàng)目控制臺(tái)被碗,點(diǎn)擊依賴->開發(fā)依賴瞎颗,輸入babel-plugin-transform-remove-console,安裝
打開babel.config.js评抚,編輯代碼如下:
修改webpack的默認(rèn)配置
默認(rèn)情況下,vue-cli 3.0生成的項(xiàng)目,隱藏了webpack配置項(xiàng),如果我們需要配置webpack
需要通過(guò)vue.config.js來(lái)配置泛释。
在項(xiàng)目根目錄中創(chuàng)建vue.config.js文件,
module.exports = {
chainWebpack:config=>{
//發(fā)布模式
config.when(process.env.NODE_ENV === 'production',config=>{
//entry找到默認(rèn)的打包入口温算,調(diào)用clear則是刪除默認(rèn)的打包入口
//add添加新的打包入口
config.entry('app').clear().add('./src/main-prod.js')
})
//開發(fā)模式
config.when(process.env.NODE_ENV === 'development',config=>{
config.entry('app').clear().add('./src/main-dev.js')
})
}
}
chainWebpack可以通過(guò)鏈?zhǔn)骄幊痰男问搅#薷膚ebpack配置
configureWebpack可以通過(guò)操作對(duì)象的形式,修改webpack配置
加載外部CDN
默認(rèn)情況下注竿,依賴項(xiàng)的所有第三方包都會(huì)被打包到j(luò)s/chunk-vendors.******.js文件中茄茁,導(dǎo)致該js文件過(guò)大
那么我們可以通過(guò)externals排除這些包魂贬,使它們不被打包到j(luò)s/chunk-vendors.******.js文件中
module.exports = {
chainWebpack:config=>{
//發(fā)布模式
config.when(process.env.NODE_ENV === 'production',config=>{
//entry找到默認(rèn)的打包入口,調(diào)用clear則是刪除默認(rèn)的打包入口
//add添加新的打包入口
config.entry('app').clear().add('./src/main-prod.js')
//使用externals設(shè)置排除項(xiàng)
config.set('externals',{
vue:'Vue',
'vue-router':'VueRouter',
axios:'axios',
lodash:'_',
echarts:'echarts',
nprogress:'NProgress',
'vue-quill-editor':'VueQuillEditor'
})
})
//開發(fā)模式
config.when(process.env.NODE_ENV === 'development',config=>{
config.entry('app').clear().add('./src/main-dev.js')
})
}
}
設(shè)置好排除之后裙顽,為了使我們可以使用vue付燥,axios等內(nèi)容,我們需要加載外部CDN的形式解決引入依賴項(xiàng)愈犹。
打開開發(fā)入口文件main-prod.js,刪除掉默認(rèn)的引入代碼
import Vue from 'vue'
import App from './App.vue'
import router from './router'
// import './plugins/element.js'
//導(dǎo)入字體圖標(biāo)
import './assets/fonts/iconfont.css'
//導(dǎo)入全局樣式
import './assets/css/global.css'
//導(dǎo)入第三方組件vue-table-with-tree-grid
import TreeTable from 'vue-table-with-tree-grid'
//導(dǎo)入進(jìn)度條插件
import NProgress from 'nprogress'
//導(dǎo)入進(jìn)度條樣式
// import 'nprogress/nprogress.css'
// //導(dǎo)入axios
import axios from 'axios'
// //導(dǎo)入vue-quill-editor(富文本編輯器)
import VueQuillEditor from 'vue-quill-editor'
// //導(dǎo)入vue-quill-editor的樣式
// import 'quill/dist/quill.core.css'
// import 'quill/dist/quill.snow.css'
// import 'quill/dist/quill.bubble.css'
axios.defaults.baseURL = 'http://127.0.0.1:8888/api/private/v1/'
//請(qǐng)求在到達(dá)服務(wù)器之前键科,先會(huì)調(diào)用use中的這個(gè)回調(diào)函數(shù)來(lái)添加請(qǐng)求頭信息
axios.interceptors.request.use(config => {
//當(dāng)進(jìn)入request攔截器,表示發(fā)送了請(qǐng)求漩怎,我們就開啟進(jìn)度條
NProgress.start()
//為請(qǐng)求頭對(duì)象勋颖,添加token驗(yàn)證的Authorization字段
config.headers.Authorization = window.sessionStorage.getItem("token")
//必須返回config
return config
})
//在response攔截器中,隱藏進(jìn)度條
axios.interceptors.response.use(config =>{
//當(dāng)進(jìn)入response攔截器勋锤,表示請(qǐng)求已經(jīng)結(jié)束饭玲,我們就結(jié)束進(jìn)度條
NProgress.done()
return config
})
Vue.prototype.$http = axios
Vue.config.productionTip = false
//全局注冊(cè)組件
Vue.component('tree-table', TreeTable)
//全局注冊(cè)富文本組件
Vue.use(VueQuillEditor)
//創(chuàng)建過(guò)濾器將秒數(shù)過(guò)濾為年月日,時(shí)分秒
Vue.filter('dateFormat',function(originVal){
const dt = new Date(originVal)
const y = dt.getFullYear()
const m = (dt.getMonth()+1+'').padStart(2,'0')
const d = (dt.getDate()+'').padStart(2,'0')
const hh = (dt.getHours()+'').padStart(2,'0')
const mm = (dt.getMinutes()+'').padStart(2,'0')
const ss = (dt.getSeconds()+'').padStart(2,'0')
return `${y}-${m}-$a052zjm ${hh}:${mm}:${ss}`
})
new Vue({
router,
render: h => h(App)
}).$mount('#app')
然后打開public/index.html添加外部cdn引入代碼
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
<title>電商后臺(tái)管理系統(tǒng)</title>
<!-- nprogress 的樣式表文件 -->
<link rel="stylesheet" />
<!-- 富文本編輯器 的樣式表文件 -->
<link rel="stylesheet" />
<link rel="stylesheet" />
<link rel="stylesheet" />
<!-- element-ui 的樣式表文件 -->
<link rel="stylesheet" />
<script src="https://cdn.staticfile.org/vue/2.5.22/vue.min.js"></script>
<script src="https://cdn.staticfile.org/vue-router/3.0.1/vue-router.min.js"></script>
<script src="https://cdn.staticfile.org/axios/0.18.0/axios.min.js"></script>
<script src="https://cdn.staticfile.org/lodash.js/4.17.11/lodash.min.js"></script>
<script src="https://cdn.staticfile.org/echarts/4.1.0/echarts.min.js"></script>
<script src="https://cdn.staticfile.org/nprogress/0.2.0/nprogress.min.js"></script>
<!-- 富文本編輯器的 js 文件 -->
<script src="https://cdn.staticfile.org/quill/1.3.4/quill.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vue-quill-editor@3.0.4/dist/vue-quill-editor.js"></script>
<!-- element-ui 的 js 文件 -->
<script src="https://cdn.staticfile.org/element-ui/2.8.2/index.js"></script>
</head>
<body>
<noscript>
<strong>We're sorry but vue_shop doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
</noscript>
<div id="app"></div>
<!-- built files will be auto injected -->
</body>
</html>
定制首頁(yè)內(nèi)容
開發(fā)環(huán)境的首頁(yè)和發(fā)布環(huán)境的首頁(yè)展示內(nèi)容的形式有所不同
如開發(fā)環(huán)境中使用的是import加載第三方包叁执,而發(fā)布環(huán)境則是使用CDN茄厘,那么首頁(yè)也需根據(jù)環(huán)境不同來(lái)進(jìn)行不同的實(shí)現(xiàn)
我們可以通過(guò)插件的方式來(lái)定制首頁(yè)內(nèi)容,打開vue.config.js谈宛,編寫代碼如下:
module.exports = {
chainWebpack:config=>{
config.when(process.env.NODE_ENV === 'production',config=>{
......
//使用插件
config.plugin('html').tap(args=>{
//添加參數(shù)isProd
args[0].isProd = true
return args
})
})
config.when(process.env.NODE_ENV === 'development',config=>{
config.entry('app').clear().add('./src/main-dev.js')
//使用插件
config.plugin('html').tap(args=>{
//添加參數(shù)isProd
args[0].isProd = false
return args
})
})
}
}
然后在public/index.html中使用插件判斷是否為發(fā)布環(huán)境并定制首頁(yè)內(nèi)容
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1.0">
<link rel="icon" href="<%= BASE_URL %>favicon.ico">
<title><%= htmlWebpackPlugin.options.isProd ? '' : 'dev - ' %>電商后臺(tái)管理系統(tǒng)</title>
<% if(htmlWebpackPlugin.options.isProd){ %>
<!-- nprogress 的樣式表文件 -->
<link rel="stylesheet" />
........
<!-- element-ui 的 js 文件 -->
<script src="https://cdn.staticfile.org/element-ui/2.8.2/index.js"></script>
<% } %>
</head>
路由懶加載
當(dāng)路由被訪問(wèn)時(shí)才加載對(duì)應(yīng)的路由文件次哈,就是路由懶加載。
路由懶加載實(shí)現(xiàn)步驟:
1.安裝 @babel/plugin-syntax-dynamic-import
打開vue控制臺(tái)入挣,點(diǎn)擊依賴->安裝依賴->開發(fā)依賴->搜索@babel/plugin-syntax-dynamic-import
點(diǎn)擊安裝。
2.在babel.config.js中聲明該插件硝拧,打開babel.config.js
//項(xiàng)目發(fā)布階段需要用到的babel插件
const productPlugins = []
//判斷是開發(fā)還是發(fā)布階段
if(process.env.NODE_ENV === 'production'){
//發(fā)布階段
productPlugins.push("transform-remove-console")
}
module.exports = {
"presets": [
"@vue/app"
],
"plugins": [
[
"component",
{
"libraryName": "element-ui",
"styleLibraryName": "theme-chalk"
}
],
...productPlugins,
//配置路由懶加載插件
"@babel/plugin-syntax-dynamic-import"
]
}
3.將路由更改為按需加載的形式径筏,打開router.js,更改引入組件代碼如下:
import Vue from 'vue'
import Router from 'vue-router'
const Login = () => import(/* webpackChunkName:"login_home_welcome" */ './components/Login.vue')
// import Login from './components/Login.vue'
const Home = () => import(/* webpackChunkName:"login_home_welcome" */ './components/Home.vue')
// import Home from './components/Home.vue'
const Welcome = () => import(/* webpackChunkName:"login_home_welcome" */ './components/Welcome.vue')
// import Welcome from './components/Welcome.vue'
const Users = () => import(/* webpackChunkName:"user" */ './components/user/Users.vue')
// import Users from './components/user/Users.vue'
const Rights = () => import(/* webpackChunkName:"power" */ './components/power/Rights.vue')
// import Rights from './components/power/Rights.vue'
const Roles = () => import(/* webpackChunkName:"power" */ './components/power/Roles.vue')
// import Roles from './components/power/Roles.vue'
const Cate = () => import(/* webpackChunkName:"goods" */ './components/goods/Cate.vue')
// import Cate from './components/goods/Cate.vue'
const Params = () => import(/* webpackChunkName:"goods" */ './components/goods/Params.vue')
// import Params from './components/goods/Params.vue'
const GoodList = () => import(/* webpackChunkName:"goods" */ './components/goods/List.vue')
// import GoodList from './components/goods/List.vue'
const GoodAdd = () => import(/* webpackChunkName:"goods" */ './components/goods/Add.vue')
// import GoodAdd from './components/goods/Add.vue'
const Order = () => import(/* webpackChunkName:"order" */ './components/order/Order.vue')
// import Order from './components/order/Order.vue'
const Report = () => import(/* webpackChunkName:"report" */ './components/report/Report.vue')
// import Report from './components/report/Report.vue'