<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<script type="text/javascript" src="js/jquery-3.2.1.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$("button").click(function(){
$("#a01").fadeIn();
$("#a02").fadeIn("slow");
$("#a03").fadeIn(3000);
});
});
</script>
<body>
<p>淡入演示</p>
<button>点击按钮</button>
<br><br>
<div id="a01" style="80px; height:80px; background-color:red; display:none;"></div>
<div id="a02" style="80px; height:80px; background-color:green; display:none;"></div>
<div id="a03" style="80px; height:80px; background-color:blue; display:none"></div>
</body>
</html>