abstract：<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Document</title><script src="./jquery-3.3.1.min.js"></script><style>a{
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="./jquery-3.3.1.min.js"></script>
<style>
a{
float: left;
display: block;
margin: 50px;
width: 100px;
line-height: 100px;
text-align: center;
height: 100px;
color: #fff;
border-radius: 50px;
text-decoration: none;
}
</style>
</head>
<body>
<script>
function bb(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 () {
bb('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>
<a href="">1</a>
<a href="">2</a>
<a href="">3</a>
<a href="">4</a>
</body>
</html>
内容很简单Math.floor(Math.random()*256)
Correcting teacher：韦小宝Correction time：2019-03-10 17:14:34
Teacher's summary：写的很不错 jQuery来写这样的项目就比js写要简单的多吧