1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
2 <html xmlns="http://www.w3.org/1999/xhtml">
3 <head>
4 <meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
5 <title>select</title>
6 <script type="text/javascript" src="eventutil.js"></script>
7 </head>
8 <body>
9 <select name="location" id="selLocation">
10 <option value="0">请选择...</option>
11 <option value="Sunnyvalue, CA">Sunnyvalue</option>
12 <option value="Los Angeles, CA">Los Angeles</option>
13 <option value="Mountain View, CA">Mountaion View</option>
14 <option value="">China</option>
15 <option>Australia</option>
16 </select>
17 <script type="text/javascript" src="test04.js"></script>
18 </body>
19 </html>
1 var selectbox = document.getElementById("selLocation");
2 var newOption = new Option("Option text", "Option value");
3 selectbox.add(newOption, undefined);
