<!DOCTYPE html>
<html>
<head>
<style>
div { width:60px; height:60px; margin:10px; float:left;
border:2px solid blue; }
.blue { background:blue; }
</style>
<script type="text/javascript" src="/jquery/jquery.js"></script>
</head>
<body>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<script>$("body").find("div").eq(1).addClass("blue");</script>
</body>
</html>
$(document).ready(
function(){
$("p:eq(1)").css("background-color","#B2E0FF"
);
});
$(".ky-crsos-menubar li:eq(0)").addClass("hit");
转载于:https://www.cnblogs.com/flytogalaxy/p/7514519.html
