<!DOCTYPE html> <html> <head> <title>左右选择框</title> <style type="text/css"> /*.s1{120px;} #d1{510px;height:320px;background-color:#F5DEB3;margin:0 auto;} #d2{height:30px;font-size:24px;background-color:blue;color:white;} #d3{padding-left:30px;}*/ </style> <script type="text/javascript" src="./jquery-1.4.3.js"></script> </head> <body> <div id="d1"> <div id="d2">选择</div> <div id="d3"> <table cellpadding="0" cellspacing="8"> <tbody><tr> <td>左</td> <td> </td> <td>右</td> </tr> <tr> <td> <select id="s1" name="s1" style="150px; height:220px;" multiple="multiple"> <option value="hh">W1</option> </select> </td> <td> <p><input id="b1" type="button" class="s1" value="-->"></p> <p><input type="button" id="b2" class="s1" value="-->>"></p> <p><input type="button" id="b3" class="s1" value="<--"></p> <p><input type="button" id="b4" class="s1" value="<<--"></p> </td> <td><select id="s2" name="s2" style="150px;height:220px;" multiple="multiple"><option value="zsf">12321</option><option value="xrr">23</option></select></td> </tr> </tbody> </table> </div> </div> <script type="text/javascript"> $(function(){ $('#b1').click(function(){ $obj = $('select option:selected').clone(true); if($obj.size() == 0){ alert("请至少选择一条!"); } $('#s2').append($obj); $('select option:selected').remove(); }); $('#b2').click(function(){ $('#s2').append($('#s1 option')); }); $('#b3').click(function(){ $obj = $('select option:selected').clone(true); if($obj.size() == 0){ alert("请至少选择一条!"); } $('#s1').append($obj); $('select option:selected').remove(); }); $('#b4').click(function(){ $('#s1').append($('#s2 option')); }); $('option').dblclick(function(){ var flag = $(this).parent().attr('id'); if(flag == "s1"){ var $obj = $(this).clone(true); $('#s2').append($obj); $(this).remove(); } else { var $obj = $(this).clone(true); $('#s1').append($obj); $(this).remove(); } }); }); </script> </body> </html>
引入jQuery即可