js Select下拉列表框进行多选、移除、交换内容的具体实现方法

复制代码 代码如下:

  <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

  <span class='wp_keywordlink_affiliate'><a href="tag/html" title="查看 html 中的全部文章" target="_blank">html</a></span>4/loose.dtd">

  <<span class='wp_keywordlink_affiliate'><a href="tag/html" title="查看 html 中的全部文章" target="_blank">html</a></span>>

  <head>

  <title>Select下拉列表框进行多选、移除、交换内容</title>

  <meta http-equiv="Content-Type" content="text/<span class='wp_keywordlink_affiliate'><a href="tag/html" title="查看 html 中的全部文章" target="_blank">html</a></span>; charset=gb2312">

  </head>

  <body style="font-size:12px">

  <form name="form1" method="post" action="">

  <table width="380" border="0" align="center" cellpadding="0" cellspacing="0">

  <tr>

  <td width="150"><table width="150" border="0" cellpadding="1" cellspacing="1" bgcolor="#CAFAFC">

  <tr>

  <td height="25" background="wp-content/uploads/2012/05/79760-772704496-8.gif" bgcolor="#FFFFFF">   请选择:</td>

  </tr>

  <tr>

  <td align="center" bgcolor="#FFFFFF"><select name="sel_place1" size="6" multiple id="sel_place1" style="width:100px " >

  <option value="sel1">江苏省</option>

  <option value="sel2">广东省</option>

  <option value="sel3">河南省</option>

  <option value="sel4">吉林省</option>

  <option value="sel5">浙江省</option>

  </select></td>

  </tr>

  </table></td>

  <td width="80" align="center" valign="bottom"><input name="sure1" type="button" id="sure1"

  onClick="allsel(document.form1.sel_place2,document.form1.sel_place1);" value="<<">

  <input name="sure2" type="button" id="sure2"

  onClick="allsel(document.form1.sel_place1,document.form1.sel_place2);" value=">>" align="center" height="2"></td>

  <td width="150"><table width="150" border="0" cellpadding="1" cellspacing="1" bgcolor="#CAFAFC">

  <tr>

  <td height="25" background="wp-content/uploads/2012/05/79760-772704496-8.gif" bgcolor="#FFFFFF">   请选择:</td>

  </tr>

  <tr>

  <td align="center" bgcolor="#FFFFFF"><select name="sel_place2" size="6" multiple id="sel_place2" style="width:100px ">

  </select></td>

  </tr>

  </table></td>

  </tr>

  </table>

  </form>

  <script language="javascript">

  function allsel(n1,n2)

  {

  while(n1.selectedIndex!=-1)

  {

  var indx=n1.selectedIndex;

  var t=n1.options[indx].text;

  n2.options.add(new Option(t));

  n1.remove(indx);

  }

  }

  </script>

  </body>

  </html></td>

  </tr>

  </table>