Window and iframe hasFocus not working

Discussion in 'JavaScript' started by WebProgrammer11, Oct 8, 2011.

0
  1. #1
    Hi there,

    I'm trying to check whether the current window or iframe has the focus and only run down a counter if this is the case. However, the hasFocus() function seems not to work for the window and iframe object in some browsers. My current script looks like this:


    function updateAdStatus(adKey, adId) {
    if(document.hasFocus() || window.frames['ad_iframe'].document.hasFocus()) {
    document    .getElementById("adSec").innerHTML = parseInt(document.getElementById("adSec").innerHTML-1);
    }
    }

    if(parseInt(document.getElementById("adSec").innerHTML) == 0) {
    initAdStatus    (adKey, adId);
    }else{
    setTimeout    ("updateAdStatus("+adKey+", "+adId+")", 1000);
    }
    }    ​

    If anyone could help me out on how to get this to work, it would be much appreciated!

    Thanks in advance.

    Cheers.
     
    WebProgrammer11, Oct 8, 2011 IP
  2. gumape

    gumape Peon

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    #2
    Hi,

    you are right, the hasFocus method is not supported in Opera.
    A possible workaround is that to listen the onfocus and onblur events on the window object in Opera:

    <html>
<head>
<script type="text/javascript">
	function updateInfo (message) {
		var input = document.getElementById ("info"); 
		info.value = message;
	}
	function onFocus () {
		updateInfo ('focus');
	}
	function onBlur () {
		updateInfo ('blur');
	}

		// opera
	if (!window.document.hasFocus) {
		window.onfocus = onFocus;
		window.onblur = onBlur;
	}
</script>
</head>
<body>
	<input id="info" />
</body>
</html>
    Code (markup):
     
    gumape, Oct 14, 2011 IP
  3. gumape

    gumape Peon

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    #3
    I forgot to mention that the onfocus and onblur events need to be listen on both window objects (see contentWindow).
     
    gumape, Oct 14, 2011 IP