<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>02.获取随机颜色</title>
<script type="text/javascript" src="../static/jQuery/jquery-3.4.1.min.js"></script>
<style type="text/css">
a{
float:left;
display:block;
margin:50px;
width:100px;
height:100px;
line-height:100px;
text-align:center;
color:#000;
border-radius:50px;
text-decoration:none;
</style>
<script type="text/javascript">
function aa(tag){
var len=document.getElementsByTagName(tag).length;
for(var i=0;i<len;i++){
document.getElementsByTagName(tag)[i].style.backgroundColor='rgb('+Math.floor(Math.random()*256)+','+Math.floor(Math.random()*256)+','+Math.floor(Math.random()*256)+')';
}
}
$(document).ready(function(){
aa('a');
$('a').mouseover(function(){
$bg=$(this).css('backgroundColor');
$(this).css('box-shadow','0px 0px 20px '+$bg);
$(this).css('border-radius','20px ');
})
$('a').mouseleave(function(){
// $bg=$(this).css('backgroundColor');
$(this).css('box-shadow','none');
$(this).css('border-radius','50px ');
})
})
</script>
</head>
<body>
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
</body>
</html>