I'm developing a platform for developing desktop apps with web technologies. In the course of doing so I've been trying to get some document/on-ready functionality working with the browser I will be integrating into the platform. That's why I'd previously asked this this question here on SO: javascript-framework-that-primarily-provides-just-document-onready-functionality
However I've not been able to get my browser of choice (shush, its a secret ;) to successfully utilize the functionality suggested by the one and only answer to the above. So, in the course of just trying to figure out what might possibly work I stumbled upon the following.
The code below has the same effect within this browser I'm using simply by executing a function after a timeout of 1 millisecond: I can write to the DOM while the big image is loading. This might not be the ultimate solution for me, I may write something specific to how DOM functionality is implemented by the Javascript engine for this browser.
Nevertheless, I decided to see if this works in standard browsers, and much to my surprise, it does! In light of which, my question: are various implementations of dom/readiness functionality provided by various Javascript frameworks, simply overkill?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script>
setTimeout(function() {
var txtNode = document.createTextNode("ready_yet?");
var ready_yet_el = document.getElementById("ready_yet");
ready_yet_el.appendChild(txtNode);
},1);
</script>
</head>
<body>
<div id="ready_yet"></div>
<img src="http://www.ryanmorr.com/tests/ondomready/pic.jpg" />
</body>
</html>
EDIT/FURTHER THOUGHTS On the page linked to by the answer to my previous related question it states "For Firefox and Opera a simple check of event type will determine if it is DOMContentLoaded. Safari and IE will check against the document’s ready state....Finally in case all else fails, the onload event will bring up the rear." Perhaps a setInterval similar to my setTimeout above could be the penultimate course of action, before relying on onload as a last resort? In any event, with the embeddable browser I've chosen, neither the DOMContentLoaded event, nor document.readyState appear to be supported.