abstract：<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>获取随机颜色</title><script type="text/javascript" src="jquery-3.3
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>获取随机颜色</title>
<script type="text/javascript" src="jquery-3.3.1.min.js"></script>
<style>
.box{
float: left;
}
button{
outline: none;
color: #fff;
background-color: #ccc;
border: none;
padding: 5px 12px;
font-size: 16px;
border-radius: 14px;
margin-left: 40px;
}
a{
height: 100px;
width: 100px;
border-radius: 50px;
color: #fff;
line-height: 100px;
text-align: center;
display: block;
/* float: left; */
margin: 30px;
text-decoration: none;
font-size: 20px;
}
</style>
<script>
function bac(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(){
bac('a')
$('a').mouseover(function(){
$bg = $(this).css('backgroundColor')
$(this).css('font-size', '50px')
$(this).css('box-shadow','0px 0px 20px '+$bg)
$(this).css('border-radius','25px')
})
$('a').mouseleave(function(){
$(this).css('font-size', '20px')
$(this).css('box-shadow','none')
$(this).css('border-radius','50px')
})
$('button').mouseover(function(){
$(this).css('backgroundColor',$bg)
})
$('.button').click(function(){
$bg = $('a').css('backgroundColor')
$m = Math.floor(Math.random()*256)
$('a').css('font-size', '50px')
$('a').css('box-shadow','0px 0px 20px '+$bg)
$('a').css('border-radius','25px')
$('a').text($m)
})
$('button').mouseleave(function(){
$(this).css('backgroundColor','#ccc')
$('a').css('font-size', '20px')
$('a').css('box-shadow','none')
$('a').css('border-radius','50px')
})
})
</script>
</head>
<body>
<div class="box">
<a href="#">1</a>
</div>
<div class="box">
<a href="#">2</a>
</div>
<div class="box">
<a href="#">3</a>
<button class="button">点击变化</button>
</div>
<div class="box">
<a href="#">4</a>
</div>
<div class="box">
<a href="#">5</a>
</div>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-04-18 09:59:53
Teacher's summary：完成的不错，每行js代码结束后，增加;号。继续加油