<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Commpatible" content="IE=edge">
<title>HTML遮罩层</title>
<style>
body{
background: aqua;
}
.shade{
position: fixed;
top: 0;
left: 0;
right: 0;
width: 100%;
height: 100%;
background: black;
opacity: 0.6;
display: none;
}
.dialog{
display: none;
position: relative;
width: 200px;
height: 200px;
background: lightcoral;
}
.btn{
position: absolute;
width: 50px;
height: 50px;
top: 40px;
left: 200px;
background: #c1f088;
}
</style>
</head>
<body>
<div class="shade"></div>
<div class="wrap">
弹窗展示
</div>
<div class="dialog">
<div class="content">内容区</div>
<div class="btn">按钮</div>
</div>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.slim.js"></script>
<script>
// 弹窗显示
$(‘.wrap‘).click(function () {
$(‘.shade‘).show()
$(‘.dialog‘).show()
})
// 点击关闭按钮，弹窗隐藏
$(‘.btn‘).click(function () {
$(‘.shade‘).hide()
$(‘.dialog‘).hide()
})
// 点击空白区域，弹窗隐藏
$(document).mouseup(function(e){
var _con = $(‘.dialog ‘); // 设置目标区域
// 点击事件的对象不是目标区域本身
// 事件对象不是目标区域的子元素
if(!_con.is(e.target) && _con.has(e.target).length === 0){ // Mark 1
console.log(e)
console.log(e.target)
$(‘.shade‘).hide()
$(‘.dialog‘).hide()
}
});
</script>
</body>
</html>
原文：https://www.cnblogs.com/renzm0318/p/10679260.html