Affect new value to combox which is not in options

[sfchun]

Hello

I wonder if there is a way to affect a value to a combobox which does not exists in predefined options ?

html part

<select name="EmailList" id="EmailListID">
		<option value=""></option>
		<option value="a@b.com">a@b.com</option>
		<option value="c@d.com">c@d.com</option>
</select>
<textarea style="resize:none;overflow:hidden;display:none;" rows="1" cols="32" maxlength="128" name ="otherEmail" id="otherEmailID" value=""></textarea>
<input type="checkbox" name="EmailCheckBox" id="EmailCheckBoxID" onChange="checkEmailCheckBox();">

javascript part

function checkEmailCheckBox(){

var EmailListValue = document.getElementById('EmailListID').value;
var OtherEmailValue = document.getElementById('EmailListID').value;

	if (document.getElementById('EmailCheckBoxID').checked){
		document.getElementById('otherEmailID').value = EmailListValue;  // <---- always works
                document.getElementById('EmailListID').style.display = 'none';
		document.getElementById('otherEmailID').style.display = 'block';
	} else {
		document.getElementById('EmailListID').value = OtherEmailValue;  // <---- works only if the set value is present in combobox options ( here : a@b.com or c@d.com ) 
										//	if try to force another value it becomes 'empty value'...
		document.getElementById('EmailListID').style.display = 'block';
		document.getElementById('otherEmailID').style.display = 'none';
	}
}

Thanks

[sfchun]

it seems I found a new thing we cannot do with javascript

[jscheuer1]

If you want to set a select's value to something none of its options have, you need to create a new option element with that value and append it to the select element first.

Demo:

http://home.comcast.net/~jscheuer1/s...ns-email-h.htm

[sfchun]

Thanks a lot for your reply !