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POCaching a reference to an element in an iframe with jquery
 

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  1. POCaching a reference to an element in an iframe with jquery
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    <p>I am using a jquery dialog that uses an iframe to let the user know there session is about to expire. I would like to update this dialog every second with a countdown, thus I would like to cache a reference to the countdown element so we don't have to query the DOM for it each second.</p> <p>I have tried to do this many different ways and I can't seem to get it working.</p> <pre><code>$(documnet).ready(function() { $("&lt;iframe src='../active_timer.html' id='iframeDialog' /&gt;").dialog({ autoOpen: false, title: "Your session is about to expire!", modal: true, width: 400, height: 200, closeOnEscape: false, draggable: false, resizable: false, buttons: { "Yes, Keep Working": function(){ $(this).dialog("close"); }, "No, Logoff": function(){ //log user out } } }); // cache a reference to the countdown element. // these below don't cache the reference I have tried them all. var $countdown = $("#iframeDialog").contents().find("#dialog-countdown"); var $countdown = $("#dialog-countdown", window.child); var $countdown = $("#dialog-countdown", $('iframe').get(0).contentDocument); //this is where I update the #dialog-countdown every second after the reference is made. }); </code></pre> <p>active_timer.html:</p> <pre><code>&lt;div id="dialog" style="overflow:hidden;"&gt; &lt;p&gt; &lt;span class="ui-icon ui-icon-alert" style="float:left; margin:0 7px 25px 0;"&gt;&lt;/span&gt; You will be logged off in &lt;span id="dialog-countdown"&gt;&lt;/span&gt; seconds. &lt;/p&gt; &lt;p&gt;Do you want to continue your session?&lt;/p&gt; &lt;/div&gt; </code></pre>
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    1. USRandall Kwiatkowski
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