import 'VueLazyload' from 'vue-lazyload'
Vue.use(VueLazyload,{
   preload:1.3,//预加载的宽高
   loading:"img的加载中的显示的图片的路径",
   error:"img加载失败时现实的图片的路径",
   attempt:3,//尝试加载的次数
   listenEvents:['scroll','wheel','mousewheel','resize','animationend','transitionend','touchmove'], //你想让vue监听的事件
})

<img v-lazy="img.src"/>

 data(){
  return {
   img:{
     src:"图片的真是路径"
        }
      }
    }

//main.js


// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import $ from 'jquery'
import 'assets/bootstrap/css/bootstrap.min.css'
import 'assets/bootstrap/js/bootstrap.min'
import router from '@/router/index'
import VueLazyload from 'vue-lazyload'
Vue.use(VueLazyload,{
  preload:1.3,
  loading:require('../static/imgs/ad3.png'),
//解释一下为什么是require('.....url'):因为vue自带webpack打包工具，如果是图片路径就会把他当成模块解析，所以直接引入就好了。
//记得把里面的路径换成自己的哦
  listenEvents:['mousewheel'],
})
//载入vue-router
//import Vue from 'vue'
/* eslint-disable no-new */
new Vue({
 el: '#app',
 router,
 template: '<App/>',
 components: { App }
})


//app.vue


<template>
 <div id="app">
  <navbar></navbar>
  <router-view></router-view>
  <hello></hello>
 <ul>
  <li v-for="item in imgUrl">
   <img v-lazy="item.src" alt="" width="300" height="150"/>
  </li>
 </ul>
 <img v-lazy='img[0].src'/>
 </div>
</template>

<script>
  import hello from './components/Hello'
  import Navbar from '@/components/navBar'
  import route from '@/components/route'
export default {
 name: 'app',
 components:{
  hello,
  Navbar
 },
 data() {
  return {
   imgUrl: [
    {src: require('@/assets/imgs/ad1.png')},//记得把里面的路径换成自己的哦
    {src: require('@/assets/imgs/ad1.png')},//记得把里面的路径换成自己的哦
   ],
   img:[
    {src:require('@/assets/imgs/ad2.png')}//记得把里面的路径换成自己的哦
   ]
  }
 }
}
</script>

<style>
#app {
 font-family: 'Avenir', Helvetica, Arial, sans-serif;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 text-align: center;
 color: #2c3e50;
 margin-top: 60px;
} 
</style>