<!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>
<script src="jquery-3.6.0.js"></script>
<style>
.paging li{
width:60px;
height:40px;
line-height:40px;
float: left;
text-align:center;
list-style: none;
}
</style>
<script>
$(function(){
// 初始化div 绑定事件
var initDiv=function(){
$(".paging li").css("background","");
$(".paging li").mouseover(function(){
$("this").css("background","green")
})
$(".paging li").mouseout(function(){
$("this").css("background","")
})
};
initDiv();
$(".paging li").click(function(){
initDiv();
// 当前被点击的div改变背景色
$(this).css("background","green");
// 取消当前div的mouseout和mouseover事件
$(this).unbind("mouseout")
$(this).unbind("mouseover")
})
})
</script>
</head>
<body>
<ul class="paging">
<li><<</li>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>>></li>
</ul>
</body>
</html>