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Is it possible to modify an iframe contents in a classic ASP page after it has loaded

Answer 1

+1 A:

You can use JQuery to modify an iframe after the page is loaded.

Another question on stackoverflow already contains a good example:

<html>
  <head>
        <script type="text/javascript" src="jquery.js"></script>
        <script>
      $(document).ready(function(){
            var locations = ["http://webPage1.com", "http://webPage2.com"];
            var len = array.length;
            var iframe = $('#frame');
            var i = 0;
            setInterval(function () {
                    $iframe.attr('src', locations[++i % len]);
            }, 30000);
      });
    </script>

Oren 2010-04-27 22:44:17

Answer 2

+2 A:

There is no "ASP page" once it hits the browser, there is only the resulting HTML.

You have a few problems here:

1) If you put something in the Iframe, it will be over-written as soon as the new page loads. So, you cannot use what's in the Iframe to display your message.

2) How to tell when the Iframe had loaded

You need to determine the location and size of the Iframe on your page. You need to position an element over it with your message. Modify the style of an absolutely-positioned element to cover the Iframe using JavaScript. Most people would use a framework, such as jQuery, to make it a lot easier.

You then need to detect when the Iframe has loaded and hide this element.

You can use this code to determine that the Iframe has loaded:

function checkIframeLoading() {
   // Get a handle to the iframe element
   var iframe = document.getElementById('testIframe');

   // Check if loading is complete
   if ( iframe.document.readyState == 'complete' ) {
      // The loading is complete, call the function we want executed once the iframe is loaded
      functionToCallAfterLoading();
      return;
   }

   // If we are here, it is not loaded. Set things up so we check   the status again in 100 milliseconds
   window.setTimeout('checkIframeLoading();', 100);      
}

Diodeus 2010-04-27 22:54:08

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Is it possible to modify an iframe contents in a classic ASP page after it has loaded

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