select列表内容交换的js实现代码

<script language="javascript" type="text/javascript"> function move(formObj,toObj){ if(formObj.selectedIndex != -1){ toObj.add(new Option(formObj.options[formObj.selectedIndex].text,formObj.options[formObj.selectedIndex].value)); formObj.remove(formObj.selectedIndex); //var index = formObj.selectedIndex; } } </script> <form name="form1"> <table> <tr> <td> <select multiple name="left" size=7 ondblclick="move(this,this.form.right)"> <option value="0" selected>item1</option> <option value="1">item2</option> <option value="2">item3</option> <option value="3">item4</option> <option value="4">item5</option> </select> </td> <td > <input type="button" name="moveRigth" value=">>" onclick="move(this.form.left,this.form.right)"/> <input type="button" name="moveLeft" value="<<" onclick="move(this.form.right,this.form.left)"/> </td> <td> <select multiple name="right" size=7 ondblclick="move(this,this.form.left)"> <option value="0" selected>test1</option> <option value="1">test2</option> <option value="2">test3</option> <option value="3">test4</option> <option value="4">test5</option> </select> </td> </tr> </table> </form>
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]