45. 实现两个select标签同步 selectObject.options[selectIndex].selected= true

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html xmlns="http://www.w3.org/1999/xhtml" >
 5 <head>
 6 <title>标题页</title>
 7 </head>
 8 <body>
 9 <!-- selectedIndex 属性可设置或返回下拉列表中被选选项的索引号。 -->
10 <select onchange="selB.options[selectedIndex].selected=true" >
11 <option>testA1</option>
12 <option>testA2</option>
13 <option>testA3</option>
14 <option>testA4</option>
15 <option>testA5</option>
16 </select>
17 &nbsp;&nbsp;&nbsp;&nbsp;
18 <select id="selB">
19 <option>testB2</option>
20 <option>testB3</option>
21 <option>testB4</option>
22 <option>testB5</option>
23 </select>
24 </body>
25 </html>

posted on 2017-03-03 01:48 Sharpest 阅读(294) 评论(0) 收藏举报