vue-view-lazy：基于vue2.x懒加载解决方案

原文连接：gitee.com

基于vue的懒加载插件

目的：图片或者其余资源进入可视区域后加载

注意

该插件依赖IntersectionObserver API，如需在较低版本浏览器运行，须要引入 polyfill

安装使用

1. 直接下载dist目录下的vue-view-lazy.min.js使用
2. 使用npm安装

直接使用

<div id="app">
    <span v-view-lazy @model="handleModel"></span>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue@2.5.16/dist/vue.js"></script>
<script src="./dist/vue-view-lazy.min.js"></script>
<script> Vue.use(vViewLazy.default,{}); new Vue({ el:'#app', data:{ msg:'数据' },https://juejin.im/editor/posts/5b013ac2518825672034563f# methods:{ handleModel(){ console.log('出现了'); },https://juejin.im/editor/posts/5b013ac2518825672034563f# }, }) </script>
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npm:

$ npm install --save-dev vue-view-lazy
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引入vue-view-lazy

.main文件

import vView from 'vue-view-lazy'
Vue.use(vView,{
    error:'../../static/images/loading.png',
    loading:'../../static/images/loading.gif',
});
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懒加载图片

.vue文件

<template>
    <ul id='img'>
        <li class="in" v-for="(item,i) in imgs" :key="i">
            <img src="#" alt="图片" v-view-lazy="item.src">
        </li>
    </ul>
</template>

<script> export default { data () { return { msg: 'Welcome to Your Vue.js App', imgs:[ {src:'../../static/images/img1.jpg'}, {src:'../../static/images/img2.png'}, {src:'../../static/images/img2.jpg'}, {src:'../../static/images/img3.jpg'}, {src:'../../static/images/img4.jpg'}, {src:'../../static/images/img5.jpeg'}, ] } }, mounted(){ }, } </script>
<style scoped> ... </style>
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懒加载数据

.vue文件

<template>
    <div>
        <!--@model自定义事件是在该dom在第一次出如今视口内时触发的方法-->
        <!--v-view-lazy='method' 或 v-view-lazy='(e)=>method(e,...arg)'-->
        <div class="cnt" v-for="(v,i) in msg" :key="i" v-view-lazy @model="(e)=>getAjaxContent(e,v.msg)">
            loading...
        </div>
        <div class="cnt" v-for="(v,i) in msg" :key="i" v-view-lazy @model="getAjaxContent()">
            loading...
        </div>
    </div>
</template>

<script> export default { data(){ return{ msg:[] } }, mounted(){ fetch('http://localhost:3000/test').then(res=>res.json()).then(res=>{ this.msg = res; }) }, methods:{ getAjaxContent(event,msg){ event.innerText = msg }, } } </script>

<style scoped> .cnt { /*background: #ececec;*/ height: 500px; margin-bottom: 50px; } </style>
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