a页面的链接
<a href="b.html?tab=1">b_tab2.html</a>
b页面
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
li {
list-style: none;
display: inline-block;
padding: 5px 10px;
background: #0a8cd2;
}
.tab .active {
background: green;
}
a {
color: #FFF;
text-decoration: none;
}
.inner li {
display: none;
}
.inner li.active {
display: inline-block;
}
</style>
</head>
<body>
<ul class="tab">
<li>
<a href="">tab1</a>
</li>
<li>
<a href="">tab2</a>
</li>
<li>
<a href="">tab3</a>
</li>
</ul>
<ul class="inner">
<li>
<a href="">我是tab1</a>
</li>
<li>
<a href="">我是tab2</a>
</li>
<li>
<a href="">我是tab3</a>
</li>
</ul>
</body>
<script src="js/jquery-3.3.1.min.js"></script>
<script>
var m = /tab=([^&]+)/.exec(location.search);
if(m){
console.log(m[1])
console.log(m)
}
console.log(location.search)
var num = (m[1]-1)
console.log(num)
$(".tab li").eq(num).addClass("active");
$(".inner li").eq(num).addClass("active");
</script>
</html>
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