echo PHP variable if iframe content is empty

Question

I have this JS / PHP Code:

<iframe src="" id="contacts_iframe" width="100%" height="300px" scrolling="no" frameborder="0"></iframe>
<script>
function() {
    $('#contacts_iframe').load(function() {            
        if($.trim($(this).contents().find("body").html()) == "") {
            alert("empty");
            <?php echo $ContactsDisplay; ?>
        }
    });
});
</script>

I want to be able to echo the $ContactsDisplay variable if the iframe is empty

I added the alert in to test, but the alert does not show and neither does the PHP variable.

What could be going wrong?

That's a syntax error, PHP outputs the string long before the page reaches the browser and the javascript runs, so you have a string where it doesn't belong. — adeneo, Sep 17 '14 at 11:01

Matthew A Thomas · Answer 1 · 2014-09-17T11:36:35.583

-2

Your nearly there try this.

 if($( "#frameDemo" ).contents().length == 0){
   alert('success loaded');
 } else {
   alert('fail not loaded');
 }

success
<iframe src="//api.jquery.com/" width="80%" height="600" id="frameDemo"></iframe>

fail
<iframe src="www.sdfsdfdsf.com" width="80%" height="600" id="frameDemo"></iframe>

edited Sep 17 '14 at 11:36

answered Sep 17 '14 at 11:02

Matthew A Thomas

924
7
15

thats not working either.. just nothing at all – charlie Sep 17 '14 at 11:06
Odd this is working for me, what browser are you using this on and version of jQuery? – Matthew A Thomas Sep 17 '14 at 11:09
check here - http://jsfiddle.net/r496ufrs/ – charlie Sep 17 '14 at 11:13
Odd it did before I posted it ;) anyway updated answer – Matthew A Thomas Sep 17 '14 at 11:37
I just had my iframe with no src and it was alerting the second alert, i then added in http://google.com to the src and it still shows the second alert – charlie Sep 17 '14 at 12:20

echo PHP variable if iframe content is empty

1 Answers1