[Javascript] Listbox

[Håkan Magnusson]

Try this.

<script type="text/javascript">
function selectall() {
	aOptions = form1.mylist.options;
	if(aOptions.length) {
		for(var i=0; i<aOptions.length; i++)
			aOptions[i].selected = 'selected';
	}
}
</script>


Dave Stoltz wrote:

> ON the same topic, how do I select ALL the items in the select box with a
> function? This is what I have so far, but doesn't seem to work:
> 
> <script>
> function selectall(){
> 	if (form1.mylist.options.length>0){
> 		var howmany = form1.mylist.options.length;
> 		for(count=1;count==howmany;count++)
> 		form1.mylist.options[count].selected=true;
> 	}
> }
> </script> 
> 
> 
> Thanks!
> 
> -----Original Message-----
> From: javascript-bounces at LaTech.edu [mailto:javascript-bounces at LaTech.edu]
> On Behalf Of Peter Brunone
> Sent: Monday, February 02, 2004 4:50 PM
> To: '[JavaScript List]'
> Subject: RE: [Javascript] Listbox
> 
> 
> var myListLength = myList.options.length;
> 
> If length is greater than zero, you have at least one item in the list.
> 
> -----Original Message-----
> From: javascript-bounces at LaTech.edu On Behalf Of Dave Stoltz
> 
> If I have a listbox (not a dropdown) named "mylist", how can I test to see
> if there are any values in the box? I need to test if it's empty or not.
> 
> Thanks!
> 
> 
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