[Javascript] Iframe: load same URL using JS

[Rees, Mark]

Sorry, I should have mentioned that the original code doesn't work in IE6 or FF3 on Win2K.

Your suggestion doesn't work either - in fact it throws an error in Firefox on the line when you try to set the src like so:

uncaught exception: [Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIDOMHTMLIFrameElement.src]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: file:///C:/mark/test.htm :: addIframe :: line 25" data: no]

What I have noticed is that setting the src to the current URL as a string works in IE:

iFrame.src='http://this.url';

but not in Firefox

Not a big problem as I can always use another page instead of the same one. I'm just a bit surprised that this isn't possible although I can quite see why it shouldn't be.


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-----Original Message-----
From: javascript-bounces at lists.evolt.org
[mailto:javascript-bounces at lists.evolt.org]On Behalf Of Peter-Paul Koch
Sent: 25 February 2009 21:13
To: JavaScript List
Subject: Re: [Javascript] Iframe: load same URL using JS


You didn't specify the browser.

Nonetheless, at a total guess, try appending the iframe before setting
the src. It just might work.

2009/2/25 Rees, Mark <Mark.Rees at astrazeneca.com>:
> Hello
>
> This doesn't work, and it doesn't work in HTML either. A single iframe is created OK but it is empty.
>
> I suppose there is some security feature in browsers to stop infinite page loads? The thing is I only wish to do it once (as the code below shows). Just curious as to what is stopping it working.
>
> function addIframe(){
>        //reloads the same page in an iframe
>        if(!document.getElementById('iframe')){
>                var iFrame=document.createElement('iframe');
>                iFrame.width=100;
>                iFrame.height=100;
>                //for some reason you cannot reload the same page in the parent
>
>                iFrame.src=location.href;
>
>                iFrame.setAttribute('id','iframe');
>                document.body.appendChild(iFrame);
>        }
> }
>
> function checkIframe(){
>        //checks whether there is already an iframe
>        if(!window.frameElement){
>                alert('i am the parent page');
>                addIframe();
>
>
>
>        }else{
>                //this never runs
>                alert('i am the child page');
>
>        }
> }
>
> window.onload=checkIframe;
>
> Mark