js操作listbox

选择人员或者部门或其他时,经常会用到2个listbox,下面这js代码,希望能给大家以及自己带来方便

function SelectAll()
{
var lst1=window.document.getElementById("SourceListBox");
var length = lst1.options.length;
for(var i=0;i<length;i )
{
var v = lst1.options[i].value;
var t = lst1.options[i].text;
var lst2=window.document.getElementById("DestinationListBox");
lst2.options[i] = new Option(t,v,true,true);
}

}

function DelAll()
{
var lst2=window.document.getElementById("DestinationListBox");
var length = lst2.options.length;
for(var i=length;i>0;i--)
{
lst2.options[i-1].parentNode.removeChild(lst2.options[i-1]);
}
}

function SelectOne()
{
var lst1=window.document.getElementById("SourceListBox");
var lstindex=lst1.selectedIndex;
if(lstindex<0)
return;
var v = lst1.options[lstindex].value;
var t = lst1.options[lstindex].text;
var lst2=window.document.getElementById("DestinationListBox");
lst2.options[lst2.options.length] = new Option(t,v,true,true);

}

function DelOne()
{
var lst2=window.document.getElementById("DestinationListBox");
var lstindex=lst2.selectedIndex;
if(lstindex>=0)
{
var v = lst2.options[lstindex].value ";";
lst2.options[lstindex].parentNode.removeChild(lst2.options[lstindex]);
}

}