I'm familiar with the typical use of onload, as in the following:
<body onload="alert('Hello, World!');">
...
</body>
Is there anywhere else in a page that onload is valid? I can experiment to see if it will work in <script>...</script> tags, but it might save me some time if anyone knows all the places that it's valid to use onload.
onload is an event specific to the body, frame, iframe, img, link, and script elements. Basically anything which represents a resource to be loaded. For body, that is the document in question. For the others, each is fairly obvious.
According to this page, you can use onload with: <body>, <frame>, <frameset>, <iframe>, <img>, <link>, <script>.
'onload' is supported by the following HTML tags:
<body>, <frame>, <frameset>, <iframe>, <img>, <link>, <script>
And the following Javascript objects:
image, layer, window
Many elements have the onload event. You can find them here
But if you want to test the loading of the DOM, then it's best to use the window.onload. It's also recommended that you separate the javascript code from the HTML markup.