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The effect of displaying a loading circle before the image is loaded
- php中世界最好的语言Original
- 2018-03-23 14:00:252487browse
This time I will bring you picturesThe effect of displaying the loading circle before the picture is loaded. What are the precautions. The following is a practical case. One Get up and take a look.
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>
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> 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!
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