JS实现浏览网页的弹出图片效果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
html,body{
height: 100%;
}
*{
margin: 0;
padding: 0;
}
#mask{
width: 100%;
height: 100%;
background-color: rgba(0, 0, 0, 0.3);
position: relative;
display: none;
}
#advert{
width: 300px;
height: 300px;
background-color: mediumseagreen;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%,-50%);
display: none;
}
#close{
width: 30px;
height: 30px;
text-decoration: none;
font-size: 16px;
background-color: gainsboro;
position: absolute;
right: 0;
top: 0;
text-align: center;
line-height: 30px;
}
</style>
</head>
<body>
<div id="mask">
<div id="advert">
<a href="#" id="close">x</a>
<img src="./img/uh.jpg" alt="加载失败">
</div>
</div>
</body>
</html>
<script>
//获取元素
function $(id){
return document.getElementById(id)
}
//用超时定时器实现
setTimeout(function(){
$("mask").style.display=block
$("advert").style.display=block
},3000) //设定时间 进入页面等待3s显示
$("close").onclick=function(){
$("mask").style.display=none
$("advert").style.display=none
}
</script>
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