How to hook the DOM loaded event?

StackOverflow https://stackoverflow.com/questions/582437

  •  06-09-2019
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Question

Can someone point me in the direction to hook the DOM loaded event?

Basically, i want to display a loader while the dom is loading (I dont mean Ajax requests- the first time a user hits a page) ?

Thanks all in advance

Was it helpful?

Solution

All of the popular Javascript libraries have a "DOM loaded" event you can use for this.

Essentially:

<html>
<head>
    <script>
    // if using jQuery
    $(document).ready(function() { $('#loading').hide(); });
    // if using Prototype
    document.observe("dom:loaded", function() { $('loading').hide(); });
    </script>
</head>
<body>
    <div id="loading">Loading...</div>
    <!-- rest of page -->
</body>
</html>

OTHER TIPS

If you're not using a framework, use the DOMContentLoaded event:

document.addEventListener('DOMContentLoaded', function() {
  // ...
})

Just to provide an alternative to jQuery, YUI Event provides an onDomReady() function for this purpose as well. Here's the example from their site:

 <script type="text/javascript">

 function init() {
    YAHOO.util.Dom.setStyle("hidden_element", "visibility", "");
 }
 YAHOO.util.Event.onDOMReady(init);

 </script>

The proper way to do this without a library (and really, even with a library, since you're dealing with script blocking and IE unpredictability) is to put a script at the very end of the page:

onLoaded = function(){ ... }

onLoaded()

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