Copy the code code as follows:
<script language="javascript">
/* List box interoperability function set*/
//Description: Add unique list box elements
function selAdd( srcList, dstList )
{
var selectedIndex = new Array();
var count = 0;
for ( i=0; i<srcList.options.length; i++ ){
if (srcList.options[i].selected){
selectedIndex[count] = i;
count++;
}
}
for ( j=0; j<selectedIndex.length; j++ ){
k = selectedIndex[j];
if (chkDup( srcList.options[k].value, dstList )==false ){
&, nbsp; dstList.options.length++;
var len = dstList.options.length-1;
dstList.options[len].value = srcList.options[k].value;
dstList.options[len].text = srcList.options[k].text;
}
}
}
//Description: Delete list box elements
function selDel(list)
{
var len = list.options.length;
varidx = 0;
while (idx<len){
if (list.options[idx].selected){
list.options.remove(idx);
len = list.options.length;
}
else{
idx++;
}
}
}
//Description: Detect duplicate list box elements
function chkDup(item, list)
{
for ( i=0; i<list.options.length; i++ ){
//alert( item + " - " + list.options[i].value );
if ( item == list.options[i].value ){
return true;
}
}
return false;
}
//Description: Select all members of the list box
function selSel(list, item)
{
item.value = " ";
for ( i=0; i<list.options.length; i++ ){
list.options[i].selected=true;
item.value += list.options[i].value + " ";
}
}
function selSelSingle(list, value)
{
for ( i=0; i<list.options.length; i++ ){
if ( list.options[i].value == value ){
list.options[i].selected=true;
break;
}
}
}
//Description: Initialize the list box based on the array
function selList(item, arr)
{
var curIndex, insIndex, val, text;
var arrItem = new Array();
if (item){
item.length = 0;
curIndex = 0;
for ( i=0; i<arr.length; i++ ){
item.length++;
insIndex = item.length - 1;
if ( arr[i] ){
arrItem = arr[i].split( ", " );
text = arrItem[1];
val = arrItem[0];
item.options[ insIndex ].text = text;
item.options[ insIndex ].value= val;
}
}
}
}
</script>