select 列表多项选择代码

作者：袖梨 2022-07-02

提示：您可以先修改部分代码再运行

<p>
<meta content="zh-cn" http-equiv="Content-Language" />
<meta content="text/html; charset=gb2312" http-equiv="Content-Type" /></p>
<SCRIPT LANGUAGE="JavaScript">

<!-- Begin
sortitems = 1;  // Automatically sort items within lists? (1 or 0)

function move(fbox,tbox) {
for(var i=0; i<fbox.options.length; i++) {
if(fbox.options[i].selected && fbox.options[i].value != "") {
var no = new Option();
no.value = fbox.options[i].value;
no.text = fbox.options[i].text;
tbox.options[tbox.options.length] = no;
fbox.options[i].value = "";
fbox.options[i].text = "";
   }
}
BumpUp(fbox);
if (sortitems) SortD(tbox);
}
function BumpUp(box)  {
for(var i=0; i<box.options.length; i++) {
if(box.options[i].value == "")  {
for(var j=i; j<box.options.length-1; j++)  {
box.options[j].value = box.options[j+1].value;
box.options[j].text = box.options[j+1].text;
}
var ln = i;
break;
   }
}
if(ln < box.options.length)  {
box.options.length -= 1;
BumpUp(box);
   }
}

function SortD(box)  {
var temp_opts = new Array();
var temp = new Object();
for(var i=0; i<box.options.length; i++)  {
temp_opts[i] = box.options[i];
}
for(var x=0; x<temp_opts.length-1; x++)  {
for(var y=(x+1); y<temp_opts.length; y++)  {
if(temp_opts[x].text > temp_opts[y].text)  {
temp = temp_opts[x].text;
temp_opts[x].text = temp_opts[y].text;
temp_opts[y].text = temp;
temp = temp_opts[x].value;
temp_opts[x].value = temp_opts[y].value;
temp_opts[y].value = temp;
      }
   }
}
for(var i=0; i<box.options.length; i++)  {
box.options[i].value = temp_opts[i].value;
box.options[i].text = temp_opts[i].text;
   }
}
// End -->
</script>
<form action="" method="post">
    <table border="0">
        <tbody>
            <tr>
                <td><select multiple="multiple" size="5" name="list1">
                <option value="11">item 1.1</option>
                <option value="12">item 1.2</option>
                <option value="13">item 1.3</option>
                <option value="站长：在远方">站长：在远方</option>
                </select></td>
                <td><input onclick="move(this.form.list1,this.form.list2)" type="button" name="B1" value=" >> " /><br />
                <input type="button" onclick="move(this.form.list2,this.form.list1)" name="B2" value=" << " /></td>
                <td><select multiple="multiple" size="5" name="list2">
                <option value="21">item 2.1</option>
                <option value="22">item 2.2</option>
                <option value="23">item 2.3</option>
                <option value="网页特效观止">网页特效观止</option>
                </select></td>
            </tr>
        </tbody>
    </table>
</form>
<p>可以同时选择好几个项目左右移动</p>

提示：您可以先修改部分代码再运行

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