利用JQ制作一个随机颜色
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<style type="text/css">
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>
<script type="text/javascript">
//改变标签背景颜色
function bs(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 () {
bs('a');
$('a').hover(function () {
$bg=$(this).css('backgroundColor');
$(this).css('box-shadow','0px 0px 20px '+$bg)
$(this).css('border-radius','20px')
},
function(){
$(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>