function switchOptions(srcObj,disObj)
{
var lengthOfToObj=disObj.length;
for(var i = srcObj.length-1;i > -1;i--)
{
var op = srcObj.options[i];
if(null != op && op.selected)
{
disObj.add(new Option(op.text,op.value),lengthOfToObj);
disObj.options[lengthOfToObj].selected=true;
op.removeNode(true);
}
}
}srcObj,disObj分别为两个select
{
var lengthOfToObj=disObj.length;
for(var i = srcObj.length-1;i > -1;i--)
{
var op = srcObj.options[i];
if(null != op && op.selected)
{
disObj.add(new Option(op.text,op.value),lengthOfToObj);
disObj.options[lengthOfToObj].selected=true;
op.removeNode(true);
}
}
}srcObj,disObj分别为两个select
<select multiple size="5" id="l" ondblclick="pick(this,eval('r'));">
<option>a</option>
<option>b</option>
<option>c</option>
<option>d</option>
<option>e</option>
</select>
<input type="button" value=">>" onclick="pickAll(eval('l'),eval('r'))">
<input type="button" value=">" onclick="pick(eval('l'),eval('r'))">
<input type="button" value="<" onclick="pick(eval('r'),eval('l'))">
<input type="button" value="<<" onclick="pickAll(eval('r'),eval('l'))">
<select multiple size="5" id="r" ondblclick="pick(this,eval('l'));">
</select>
</form><script language="javascript">
function pick(src,dest){
if(src.options.length == 0 || src.selectedIndex < 0)
return;
dest.options[dest.options.length] = new Option(src.options[src.selectedIndex].text,src.options[src.selectedIndex]);
src.options.remove(src.selectedIndex);
}
function pickAll(src,dest){
if(src.options.length == 0)
return;
var len = src.options.length;
for(var i=0;i<len;i++)
{
dest.options[dest.options.length] = new Option(src.options[0].text,src.options[0].value);
src.options.remove(0);
}
}
</script>