JS simple web page progress bar implementation code
This article mainly shares with you the implementation code of JS simple web page progress bar, hoping to help everyone.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>jquery实现简单网页进度条</title>
<style>
* {
margin: 0;
padding: 0;
}
/*大小和body一样,盖住全部内容*/
.loading {
width: 100%;
height: 100%;
background: #fff;
position: fixed;
top: 0;
left: 0;
z-index: 999;
}
/*图片和父容器大小一样*/
img {
width: 100%;
}
/*加载动画*/
.loading .pic {
width: 200px;
height: 100px;
background: url(img/07.gif) no-repeat center;
/* 大家可以去www.loading.io浏览一下，里面提供了很多进度条小动画 */
position: absolute;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
}
</style>
</head>
<body>
<p class="loading">
<p class="pic"></p>
</p>
<!-- 页面加载完成后要展示的图片 -->
<img src="01.jpg" alt="">
<img src="02.jpg" alt="">
<img src="06.jpg" alt="">
</body>
<script>
/*
通过加载事件来完成网页加载事件
onreadystatechange:页面加载状态改变时的状态
document.readyState：返回当前文档的状态
1.uninitialized - 还未开始加载
2.loading - 载入中
3.interactive - 已加载， 文档与用户可以开始交互
4.complete - 载入完成
*/
document.onreadystatechange = function () {
if (document.readyState == "complete") { //判断状态
$(".loading").fadeOut();
}
}
</script>
</html>Related recommendations:
JS writing instance method of web page progress bar
A simple implementation method of web page progress bar
Recommended articles about web page progress bars
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