asked on

How can clear all options and optgroup of select?

Hi,

I want to clear a Select elements. I haven´t any proble with the options, but with the Optgroup I have a problem.

When the page loads, the select list fills with some values, that are grouped. The I have a button that change those values with it´s key, and then I refill the select with the new values. Here the Optgroup is repeated.... I don´t want to replace the select wqith a new elemnt, because I create this select at first time from a class with some characteristics and functions assigned.

So, how I can clear all the optgroup??

Thanks

Hugo

TimYates

You mean remove the items from inside the select?

I don't get what you mean by "optgroup" :-(

If it is what I said, then:

select.options.length = 0 ;

will clear them

nabsol

Hi

Hope this helps

To remove all:
function removeAllOptions(selectbox)
{
var i;
for(i=selectbox.options.length-1;i>=0;i--)
{
selectbox.remove(i);
}
}

///////////Or ///////////

endSelect = document.getElementById('endSelect');
/* Clear out the current options */
for (i = 0; i < endSelect.options.length; i++) {
endSelect.options[i] = null;
}

By Nab

nabsol

Hi

To remove only selected options

function removeOptions(selectbox)
{
var i;
for(i=selectbox.options.length-1;i>=0;i--)
{
if(selectbox.options[i].selected)
selectbox.remove(i);
}
}

By Nab

_JHL_

ASKER

nasbol....
Thanks, I actually use that function to clear the options, but my problem comes with the optgroup, they don´t deleted.... I want to clear all inclusive the optgroup

Thanks...

nabsol

Hi
Hope this will help
http://www.faqts.com/knowledge_base/view.phtml/aid/8001

By Nab

ASKER CERTIFIED SOLUTION

nabsol

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial