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Below I will share with you an article on Vue to implement the loading component before the image loading is completed. It has a good reference value and I hope it will be helpful to everyone.
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>
The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
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