这里介绍Select列表各项上移和下移的Js代码，可以手功排序，以前我们都见到过的，从事WEB编程的朋友经常会用得到。
运行效果如下图所示：
在线演示地址如下：
具体代码如下：
<html> <head> <title>Select列表各项上移和下移</title> <script> function move(index,to) { var list = document.form.list; var total = list.options.length-1; if (index == -1) return false; if (to == +1 && index == total) return false; if (to == -1 && index == 0) return false; var items = new Array; var values = new Array; for (i = total; i >= 0; i--) { items[i] = list.options[i].text; values[i] = list.options[i].value; } for (i = total; i >= 0; i--) { if (index == i) { list.options[i + to] = new Option(items[i],values[i + to], 0, 1); list.options[i] = new Option(items[i + to], values[i]); i--; } else { list.options[i] = new Option(items[i], values[i]); } } list.focus(); } function submitForm() { var list = document.form.list; var theList = "?"; for (i = 0; i <= list.options.length-1; i++) { theList += "list" + list.options[i].value + "=" + list.options[i].text; if (i != list.options.length-1) theList += "&"; } location.href = document.form.action + theList; } </script> </head> <body> <form method="GET" action=""> <table> <tr> <td> <select size="4"> <option value="1">ASP</option> <option value="2">PHP</option> <option value="3">JSP</option> <option value="4">JAVA</option> </select><br><br> <input type="button" value="submit"> </td> <td valign="top"> <input type="button" value="↑"><br><br> <input type="button" value="↓"> </td> </tr> </table> </form> </body> </html>