validate for null and empty(spacebar)

[cedtech23]

I am validating my form to see if a user didn't enter data in a text box.
The code below works if they don't enter data, but if they click in the box and press the spacebar it does not work. I want to test for both empty and null(which is what I think the spacebar is).

I know I have to change this line to test for both, but I am lost on how to appcomplish this. any ideas?



if ( document.test.elements[err[i]].value == "" )


Thanks

<script type='text/javascript'>
function isEmpty()
{

	var errmsg = new String();
	var err = new Array("req1");

	
	for(i=0;i<err.length;i++) {

		if ( document.test.elements[err[i]].value == "" )
		{
			errmsg += "Error";
        	
		}

	}

	if(errmsg.length > 0) {
		alert(errmsg);
		return false;
	}

	return true;
}

</script>

[Raffles]

"Spacebar only" is text. It looks empty to the eye, but as far as computers are concerned, spaces are text.

Try this:

<script type="text/javascript">
function isEmpty()
{

	var errmsg = '', curerr;
	var err = new Array("req1");

	
	for(i=0;i<err.length;i++) {
           curerr = document.test.elements[err[i]].replace(/^\s+|\s+$/g, '');
		if ( curerr.length === 0)
		{
			errmsg += "Error";
        	
		}

	}

	if(errmsg.length > 0) {
		alert(errmsg);
		return false;
	}

	return true;
}

</script>