Reload 2 php pages in iframes in sequence

Question

I have an index page with iframes, two of the iframes I want to re-load in sequence, iframe1 at 20 seconds, then iframe2 20 seconds later, then iframe1 again in 20 seconds, then iframe2 again in 20 seconds, forever.

I have tried sleep() in php, , and other javascript.

Why does php and javascript not support a simple script pause?

do ( '1' < '2' ) {

sleep(20);

echo script type="text/javascript

echo 'parent.featuredBottom.location = "modules/featured-bottom.php"';

echo /script>

sleep(20);

echo script type="text/javascript

echo 'parent.randomBottom.location = "modules/random-bottom.php"';

echo /script

}

sleep(); pauses everything..

while (TRUE) is a nicer than do ( '1' < '2' ) IMO.

alex
– alex

2011-08-16 03:11:30 +00:00
Commented Aug 16, 2011 at 3:11 — alex
– alex, Commented Aug 16, 2011 at 3:11

nnnnnn · Accepted Answer · 2011-08-16 03:11:08Z

1

JavaScript has a function called setTimeout(), which will wait for a specified number of milliseconds and then execute some code.

In the onload (or document ready, whatever) of each iframe use setTimeout() to control the reload of the other iframe.

// within the iframe1 content:
<body onload="iFrame1Loaded();">
...


function iFrame1Loaded() {
  setTimeout(function() {
    // put code here to tell iFrame2 to reload,
    // parent.frames["iframe2"].something.something...
  }, 20000);
}

And then basically the same thing in your iFrame2, with the 1s and 2s reversed...

More info about setTimeout() is available at the MDN website.

Note: do not attempt to implement your own sleep() function in JavaScript, because it will lock up the browser - the user won't be able to scroll, it won't repaint, etc., until the sleep is over.

answered Aug 16, 2011 at 3:11

nnnnnn

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