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好程序員web前端培訓(xùn) 分享kbone 高級(jí) - 事件系統(tǒng):1 、用法, 對(duì)于多頁(yè)面的應(yīng)用,在 Web 端可以直接通過 a 標(biāo)簽或者 location 對(duì)象進(jìn)行跳轉(zhuǎn),但是在小程序中則行不通;同時(shí) Web 端的頁(yè)面 url 實(shí)現(xiàn)和小程序頁(yè)面路由也是完全不一樣的,因此對(duì)于多頁(yè)開發(fā)最大的難點(diǎn)在于如何進(jìn)行頁(yè)面跳轉(zhuǎn)。
對(duì)于多頁(yè)應(yīng)用,此處和 Web 端一致,有多少個(gè)頁(yè)面就需要配置多少個(gè)入口文件。如下例子,這個(gè)應(yīng)用中包含 page1、page2 和 page2 三個(gè)頁(yè)面:
// webpack.mp.config.js
module.exports = {
entry: {
page1: path.resolve(__dirname, '../src/page1/main.mp.js'),
page2: path.resolve(__dirname, '../src/page2/main.mp.js'),
page3: path.resolve(__dirname, '../src/page3/main.mp.js'),
},
// ... other options
}
mp-webpack-plugin 這個(gè)插件的配置同樣需要調(diào)整,需要開發(fā)者提供各個(gè)頁(yè)面對(duì)應(yīng)的 url 給 kbone。
module.exports = {
origin: 'https://test.miniprogram.com',
entry: '/page1',
router: {
page1: ['/(home|page1)?', '/test/(home|page1)'],
page2: ['/test/page2/:id'],
page3: ['/test/page3/:id'],
},
// ... other options
}
其中 origin 即 window.location.origin 字段,使用 kbone 的應(yīng)用所有頁(yè)面必須同源,不同源的頁(yè)面禁止訪問。entry 頁(yè)面表示這個(gè)應(yīng)用的入口 url。router 配置則是各個(gè)頁(yè)面對(duì)應(yīng)的 url,可以看到每個(gè)頁(yè)面可能不止對(duì)應(yīng)一個(gè) url,而且這里的 url 支持參數(shù)配置。
有了以上幾個(gè)配置后,就可以在 kbone 內(nèi)使用 a 標(biāo)簽或者 location 對(duì)象進(jìn)行跳轉(zhuǎn)。kbone 會(huì)將要跳轉(zhuǎn)的 url 進(jìn)行解析,然后根據(jù)配置中的 origin 和 router 查找出對(duì)應(yīng)的頁(yè)面,然后拼出頁(yè)面在小程序中的路由,最后通過小程序 API 進(jìn)行跳轉(zhuǎn)(利用 wx.redirectTo 等方法)。
在 kbone-advanced 目錄下創(chuàng)建 02-mulpages 目錄。本案例在這個(gè)目錄下實(shí)現(xiàn)。
cd 02-mulpages
npm init -y
編輯 package.json:
{
"name": "01-env",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"mp": "cross-env NODE_ENV=production webpack --config build/webpack.mp.config.js --progress --hide-modules"
},
"dependencies": {
"add": "^2.0.6",
"vue": "^2.5.11"
},
"browserslist": [
"> 1%",
"last 2 versions",
"not ie <= 8"
],
"devDependencies": {
"babel-core": "^6.26.0",
"babel-loader": "^7.1.2",
"babel-preset-env": "^1.6.0",
"cross-env": "^5.0.5",
"css-loader": "^0.28.7",
"file-loader": "^1.1.4",
"html-webpack-plugin": "^4.0.0-beta.5",
"mini-css-extract-plugin": "^0.5.0",
"optimize-css-assets-webpack-plugin": "^5.0.1",
"stylehacks": "^4.0.3",
"vue-loader": "^15.7.0",
"vue-template-compiler": "^2.6.10",
"webpack": "^4.29.6",
"webpack-cli": "^3.2.3",
"mp-webpack-plugin": "latest"
},
"keywords": [],
"author": "",
"license": "ISC"
}
安裝依賴包:
npm install
在 02-mulpages 目錄下創(chuàng)建 build 文件夾,在文件夾下創(chuàng)建 webpack.mp.config.js 文件,內(nèi)容如下:
const path = require('path')
const webpack = require('webpack')
const MiniCssExtractPlugin = require('mini-css-extract-plugin')
const { VueLoaderPlugin } = require('vue-loader')
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const TerserPlugin = require('terser-webpack-plugin')
const MpPlugin = require('mp-webpack-plugin') // 用于構(gòu)建小程序代碼的 webpack 插件
const isOptimize = false // 是否壓縮業(yè)務(wù)代碼,開發(fā)者工具可能無(wú)法完美支持業(yè)務(wù)代碼使用到的 es 特性,建議自己做代碼壓縮
module.exports = {
mode: 'production',
entry: {
page1: path.resolve(__dirname, '../src/page1/main.mp.js'),
page2: path.resolve(__dirname, '../src/page2/main.mp.js'),
page3: path.resolve(__dirname, '../src/page3/main.mp.js'),
},
output: {
path: path.resolve(__dirname, '../dist/mp/common'), // 放到小程序代碼目錄中的 common 目錄下
filename: '[name].js', // 必需字段,不能修改
library: 'createApp', // 必需字段,不能修改
libraryExport: 'default', // 必需字段,不能修改
libraryTarget: 'window', // 必需字段,不能修改
},
target: 'web', // 必需字段,不能修改
optimization: {
runtimeChunk: false, // 必需字段,不能修改
splitChunks: { // 代碼分隔配置,不建議修改
chunks: 'all',
minSize: 1000,
maxSize: 0,
minChunks: 1,
maxAsyncRequests: 100,
maxInitialRequests: 100,
automaticNameDelimiter: '~',
name: true,
cacheGroups: {
vendors: {
test: /[\\/]node_modules[\\/]/,
priority: -10
},
default: {
minChunks: 2,
priority: -20,
reuseExistingChunk: true
}
}
},
minimizer: isOptimize ? [
// 壓縮CSS
new OptimizeCSSAssetsPlugin({
assetNameRegExp: /\.(css|wxss)$/g,
cssProcessor: require('cssnano'),
cssProcessorPluginOptions: {
preset: ['default', {
discardComments: {
removeAll: true,
},
minifySelectors: false, // 因?yàn)?wxss 編譯器不支持 .some>:first-child 這樣格式的代碼,所以暫時(shí)禁掉這個(gè)
}],
},
canPrint: false
}),
// 壓縮 js
new TerserPlugin({
test: /\.js(\?.*)?$/i,
parallel: true,
})
] : [],
},
module: {
rules: [
{
test: /\.css$/,
use: [
MiniCssExtractPlugin.loader,
'css-loader'
],
},
{
test: /\.vue$/,
loader: [
'vue-loader',
],
},
{
test: /\.js$/,
use: {
loader: 'babel-loader',
options: {
presets: ['env']
}
},
exclude: /node_modules/
},
{
test: /\.(png|jpg|gif|svg)$/,
loader: 'file-loader',
options: {
name: '[name].[ext]?[hash]'
}
}
]
},
resolve: {
extensions: ['*', '.js', '.vue', '.json']
},
plugins: [
new webpack.DefinePlugin({
'process.env.isMiniprogram': true, // 注入環(huán)境變量,用于業(yè)務(wù)代碼判斷
}),
new MiniCssExtractPlugin({
filename: '[name].wxss',
}),
new VueLoaderPlugin(),
new MpPlugin(require('./miniprogram.config.js')),
],
}
在 02-mulpages/build 文件夾下創(chuàng)建 miniprogram.config.js 文件,內(nèi)容如下:
module.exports = {
origin: 'https://test.miniprogram.com',
entry: '/',
router: {
page1: ['/a'],
page2: ['/b'],
page3: ['/c'],
},
redirect: {
notFound: 'page1',
accessDenied: 'page1',
},
generate: {
appEntry: 'miniprogram-app',
// 構(gòu)建完成后是否自動(dòng)安裝小程序依賴。'npm':使用 npm 自動(dòng)安裝依賴
autoBuildNpm: 'npm'
},
runtime: {
cookieStore: 'memory',
},
app: {
navigationBarTitleText: 'kbone-multiple-pages',
},
global: {
share: true,
},
pages: {
page1: {
extra: {
navigationBarTitleText: 'page1',
},
},
},
projectConfig: {
appid: '',
projectname: 'kbone-multiple-pages',
},
packageConfig: {
author: 'Felixlu',
}
}
在 /src/ 下創(chuàng)建 page1, page2, page3 三個(gè)文件夾,在文件夾里創(chuàng)建三個(gè)頁(yè)面,每個(gè)頁(yè)面由 App.vue 和 main.mp.js 兩個(gè)文件組成。
/src/page1/App.vue 內(nèi)容:
<template>
<div class="cnt">
<Header></Header>
<p>當(dāng)前 url:{{url}}</p>
<a href="/b">當(dāng)前頁(yè)跳轉(zhuǎn)</a>
<a href="/c" target="_blank">新開頁(yè)面跳轉(zhuǎn)</a>
<button @click="onClickJump">當(dāng)前頁(yè)跳轉(zhuǎn)</button>
<button @click="onClickOpen">新開頁(yè)面跳轉(zhuǎn)</button>
<Footer></Footer>
</div>
</template>
<script>
import Header from '../common/Header.vue'
import Footer from '../common/Footer.vue'
export default {
name: 'App',
components: {
Header,
Footer
},
data() {
return {
url: location.href,
}
},
created() {
window.addEventListener('wxload', query => console.log('page1 wxload', query))
window.addEventListener('wxshow', () => console.log('page1 wxshow'))
window.addEventListener('wxready', () => console.log('page1 wxready'))
window.addEventListener('wxhide', () => console.log('page1 wxhide'))
window.addEventListener('wxunload', () => console.log('page1 wxunload'))
window.=> {
return {
title: 'kbone-demo',
// path: '/a', // 當(dāng)前頁(yè)面
// path: 'https://test.miniprogram.com/a', // 當(dāng)前頁(yè)面的完整 url
// path: '/b', // 其他頁(yè)面
// path: 'https://test.miniprogram.com/b', // 其他頁(yè)面的完整 url
miniprogramPath: `/pages/page2/index?type=share&targeturl=${encodeURIComponent('https://test.miniprogram.com/b')}`, // 自己組裝分享頁(yè)面路由
}
}
},
mounted() {
// cookie
console.log('before set cookie', document.cookie)
document.cookie = `time=${+new Date()}; expires=Wed Jan 01 2220 00:00:00 GMT+0800; path=/`
console.log('after set cookie', document.cookie)
},
methods: {
onClickJump() {
window.location.href = '/b'
},
onClickOpen() {
window.open('/c')
},
},
}
</script>
<style>
.cnt {
margin-top: 20px;
}
a, button {
display: block;
width: 100%;
height: 30px;
line-height: 30px;
text-align: center;
font-size: 20px;
border: 1px solid #ddd;
}
</style>
/src/page1/main.mp.js 內(nèi)容:
import Vue from 'vue'
import App from './App.vue'
export default function createApp() {
const container = document.createElement('div')
container.id = 'app'
document.body.appendChild(container)
return new Vue({
el: '#app',
render: h => h(App)
})
}
/src/common/Header.vue 內(nèi)容:
<template>
<div class="header">
<p>wechat-miniprogram-header</p>
</div>
</template>
<script>
import add from 'add'
import { printf } from './utils'
export default {
mounted() {
printf('I am Header --> ' + add([7, 8]))
},
}
</script>
<style>
.header {
margin-bottom: 10px;
width: 100%;
text-align: center;
}
</style>
/src/common/utils.js 內(nèi)容:
export function printf(str) {
console.log('common/utils.js --> ', str)
}
/src/common/Footer.vue 內(nèi)容:
<template>
<div class="footer">
<p>wechat-miniprogram-footer</p>
</div>
</template>
<script>
export default {}
</script>
<style>
.footer {
margin-top: 10px;
width: 100%;
text-align: center;
}
</style>
/src/page2/App.vue 內(nèi)容:
<template>
<div class="cnt">
<Header></Header>
<p>當(dāng)前 url:{{url}}</p>
<a href="/a">回到首頁(yè)</a>
<button @click="onClickJump">回到首頁(yè)</button>
<button @click="onClickReLaunch">relaunch</button>
<Footer></Footer>
</div>
</template>
<script>
import Header from '../common/Header.vue'
import Footer from '../common/Footer.vue'
export default {
name: 'App',
components: {
Header,
Footer
},
data() {
return {
url: location.href,
}
},
created() {
window.addEventListener('wxload', query => console.log('page2 wxload', query))
window.addEventListener('wxshow', () => console.log('page2 wxshow'))
window.addEventListener('wxready', () => console.log('page2 wxready'))
window.addEventListener('wxhide', () => console.log('page2 wxhide'))
window.addEventListener('wxunload', () => console.log('page2 wxunload'))
window.=> {
return {
title: 'kbone-demo',
path: '/a',
}
}
},
methods: {
onClickJump() {
window.location.href = '/a'
},
onClickReLaunch() {
wx.reLaunch({
url: `/pages/page1/index?type=jump&targeturl=${encodeURIComponent('/a')}`,
})
},
},
}
</script>
<style>
.cnt {
margin-top: 20px;
}
a, button {
display: block;
width: 100%;
height: 30px;
line-height: 30px;
text-align: center;
font-size: 20px;
border: 1px solid #ddd;
}
</style>
/src/page2/main.mp.js 內(nèi)容:
import Vue from 'vue'
import App from './App.vue'
export default function createApp() {
const container = document.createElement('div')
container.id = 'app'
document.body.appendChild(container)
return new Vue({
el: '#app',
render: h => h(App)
})
}
/src/page3/App.vue 內(nèi)容:
<template>
<div class="cnt">
<Header></Header>
<p>當(dāng)前 url:{{url}}</p>
<button @click="onClickBack">回到上一頁(yè)</button>
<button @click="onClickClose">關(guān)閉當(dāng)前窗口</button>
<Footer></Footer>
</div>
</template>
<script>
import Header from '../common/Header.vue'
import Footer from '../common/Footer.vue'
export default {
name: 'App',
components: {
Header,
Footer
},
data() {
return {
url: location.href,
}
},
created() {
window.addEventListener('wxload', query => console.log('page3 wxload', query))
window.addEventListener('wxshow', () => console.log('page3 wxshow'))
window.addEventListener('wxready', () => console.log('page3 wxready'))
window.addEventListener('wxhide', () => console.log('page3 wxhide'))
window.addEventListener('wxunload', () => console.log('page3 wxunload'))
window.=> {
return {
title: 'kbone-demo',
path: '/a',
}
}
},
methods: {
onClickBack() {
if (process.env.isMiniprogram) {
wx.navigateBack()
}
},
onClickClose() {
window.close()
},
},
}
</script>
<style>
.cnt {
margin-top: 20px;
}
a, button {
display: block;
width: 100%;
height: 30px;
line-height: 30px;
text-align: center;
font-size: 20px;
border: 1px solid #ddd;
}
</style>
/src/page3/main.mp.js 內(nèi)容:
import Vue from 'vue'
import App from './App.vue'
export default function createApp() {
const container = document.createElement('div')
container.id = 'app'
document.body.appendChild(container)
return new Vue({
el: '#app',
render: h => h(App)
})
}
npm run mp
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