Add loading effect before vue image loading is completed-JS Tutorial-php.cn

Add loading effect before vue image loading is completed

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Release： 2018-04-12 17:29:09

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This time I will bring you vuepicturesIncrease the loading effect before the loading is completed, and increase the loading effect before the vue image is loaded.What are the precautions, the following is the actual combat Let’s take a look at the case.

is as follows:

<template>
 <img :src="url">
</template>
<script>
 export default {
  props: ['src'], // 父组件传过来所需的url
  data() {
   return {
    url: 'http://www.86y.org/images/loading.gif' // 先加载loading.gif
   }
  },
  mounted() {
   var newImg = new Image()
   newImg.src = this.src
   newImg.onerror = () => { // 图片加载错误时的替换图片
    newImg.src = 'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1489486509807&di=22213343ba71ad6436b561b5df999ff7&imgtype=0&src=http%3A%2F%2Fa0.att.hudong.com%2F77%2F31%2F20300542906611142174319458811.jpg'
   }
   newImg.onload = () => { // 图片加载成功后把地址给原来的img
    this.url = newImg.src
   }
  }
 }
</script>

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The following is pure js code

<!DOCTYPE html>
<html lang="en">
<head>
 <meta charset="UTF-8">
 <title>loading</title>
</head>
<body>
 <img id="img">
 <script>
  window.onload = () => {
   var img = document.querySelector('#img');
   img.src = 'http://www.86y.org/images/loading.gif'; // 先加载loading.gif
   var newImg = new Image();
   newImg.src = 'https://avatars3.githubusercontent.com/u/1?v=3';
   newImg.onerror = () => { // 图片加载错误时的替换图片
    newImg.src = 'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1489486509807&di=22213343ba71ad6436b561b5df999ff7&imgtype=0&src=http%3A%2F%2Fa0.att.hudong.com%2F77%2F31%2F20300542906611142174319458811.jpg';
   }
   newImg.onload = () => { // 图片加载成功后把地址给原来的img
    img.src = newImg.src
   }
  }
 </script>
</body>
</html>

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I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!