'event' is null or not an object

[buzzt]

Why do I keep getting this error? The script works, but there is still this error.

Here is the script:

<script language="JavaScript" type="text/JavaScript">
<!--
function formval()
{
if (document.form.formfield.value=='')
{
alert("Please enter your search.")
event.returnValue=false;
}
}

var formWin = null;
function openFormWin() 
{
if (document.form.formfield.value=='')
{
alert("Please enter your search.")
event.returnValue=false;
}
formWin = open('search.php','formWin','width=555,height=450,scrollbars=yes,left=150,top=100');
if (formWin && !formWin.closed) formWin.focus();
return true;
}
function noenter() {
return !(window.event && window.event.keyCode == 13); }

function schedule()
{
 open('schedule.php','Schedule','width=555,height=450,scrollbars=yes,left=150,top=100');
}
//-->
</script>

Here is the href

href="javascript:formval();openFormWin();document.form.submit();void(0)" alt="Search!"

 

[vongrunt]

Try window.event (IE only?)

 

[buzzt]

Now it's 'window.event' is null or not an object.

??

 

[buzzt]

Anyone else have an idea?

 

[vongrunt]

Actually yes... if you used something like

<A href="javascript:formval();...void(0);">

... then event object won't be available. Use this instead ("javascript" prefix may not be necessary but anyway):

<A href="javascript:void(0);" onclick="javascript:formval();...">

 

[buzzt]

Well, that stops the error, but the window still opens. I need for the script to just stop everything when that alert comes up.

 

[cLFlaVA]

Huh?

Am I missing something?

Does this work?

[tt]<a href="#" onclick="...; ...; return false;">[/tt]

*cLFlaVA
----------------------------
Lois: "Peter, you're drunk!"
Peter: "I'm not drunk, I'm just exhausted from stayin' up all night drinking!

 

[vongrunt]

That's another problem. In this code:

javascript:formval();openFormWin();document.form.submit();

... event.returnValue won't stop execution after formval(). Do it old-fashioned way:

<A href="javascript:void(0);" onclick="javascript:formval();">...</a>

function formval()
{	var bOK = true;
	if (document.form.formfield.value=='')
	{	alert("Please enter your search.")
		bOK = false;
	}

	// blah blah

	if (bOK)
	{	openFormWin()
	}
}

Also note that window opens asynchronously - code will automatically continue after openFormWin(). I have no idea how code flow is supposed to look like... maybe you need modal dialog instead of normal window.

 

[buzzt]

I fixed it. Here's what I ended up with (in case anybody ends up in a similar situation):

<script language="JavaScript" type="text/JavaScript">
<!--
var formWin = null;
function openFormWin() 
{
	if (document.form.formfield.value=='')
		{
			alert("Enter search criteria")
			window.event.returnValue=false;
		}
	
	else
	{
		formWin = open('schedule.php','formWin','width=555,height=450,scrollbars=yes,left=150,top=100');
		if (formWin && !formWin.closed) formWin.focus();
		return true;
	}
}

function noenter()
{
	return !(window.event && window.event.keyCode == 13); 
}

function search()
{
	document.form.submit();
}
//-->
</script>

And the href... (made a big difference)

href="javascript:search();" onClick="openFormWin();">