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    <p>Technically, you can't do this as you have modeled in your code, since JavaScript is single-threaded, and usually runs on the browser (or tab) UI thread -- any sleep/delay will block the browser from redrawing the page and will also prevent user interaction with the page.</p> <p>You need to arrange for the browser to invoke your code periodically. Something like this will do the trick:</p> <pre><code>var objects = $.makeArray($( '.someClass' )); var callback; callback = function() { var item = objects.shift(); // Do something with item. if (objects.length != 0) { setTimeout(callback, 5000); } } setTimeout(callback, 5000); </code></pre> <p>See <a href="http://jsfiddle.net/zmzsA/1/" rel="nofollow">an example</a>.</p> <p>This solution assumes that you want each item to be processed 5 seconds from the time that the last item finished processing. This means that:</p> <ol> <li>If you do <code>confirm()</code> or something while processing each item, the next item will be processed 5 seconds from the time that the user closes the dialog.</li> <li>The total execution time will be (5000N + T) where N is the number of items in the initial list, and T is the total time it takes to process each item.</li> </ol> <hr> <p>Here's a function you can use that encapsulates this functionality:</p> <pre><code>jQuery.eachWithDelay = function(sequence, delay, callback) { var objects = jQuery.makeArray(sequence); if (objects.length == 0) { return; } var f; f = function() { var item = objects.shift(); if (callback(item) &amp;&amp; objects.length != 0) { setTimeout(f, delay); } }; setTimeout(f, delay); }; </code></pre> <p>Called like:</p> <pre><code>$.eachWithDelay($('.someClass'), 5000, function(item) { // Do something with item return true; // Return true to continue iterating, or false to stop. }); </code></pre> <p>See the <a href="http://jsfiddle.net/YB7Ha/" rel="nofollow">updated fiddle</a>.</p>
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    1. COJust a note - `Array.shift()` in javascript can be significantly slower than manually iterating through the array. This is because javascript arrays are not 'true' arrays - they are objects with Strings as keys. This means that when you `.shift()` the first element off, the JS engine must move every item in the array, eg. `arr["0"] = arr["1"]; arr["1"] = arr["2"]; ...etc...`
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    2. CO@digitalbath: Noted. Of course, premature optimization is the root of all evil; if that optimization is required in this case then it could be implemented pretty easily. I tend to go for readability first, which is why I chose `shift`. But readers should be made aware of the performance implications, so +1 to you.
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    3. COtotally agree - just thought I'd mention it.
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