select自定义属性值
1、问题背景
下拉框可以传递值和内容，不过有时为了传值，还需要连带其他的值也一起传过来；如果用title属性，鼠标移到下拉框上方会显示出来，这样就会导致被暴露出来。所以，为了安全和传值方便，可以利用自定义属性。
2、实现源码
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>自定义下拉框属性值</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<script type="text/javascript" src="<%=basePath%>/js/jquery-2.2.3.js"></script>
<script type="text/javascript">
$(function(){
$("#sel").change(function(){
var sel = $("#sel option:selected").val();
var name = $("#sel option:selected").text();
var child = $("#sel option:selected").attr("child");
alert("下拉框的值："+sel+"\n"+"下拉框的内容："+name+"\n"+"下拉框属性值child："+child);
});
});
</script>
</head>
<body>
<div id="div-select">
<select id="sel" style="width:200px;">
<option value="1" child="2016010101">篮球</option>
<option value="2" child="2016010102">足球</option>
<option value="3" child="2016010103">铅球</option>
<option value="4" child="2016010104">羽毛球</option>
<option value="5" child="2016010105">乒乓球</option>
<option value="6" child="2016010106">网球</option>
</select>
</div>
</body>
</html>
3、实现结果
