I'm executing an external script, using a <script> inside <head>.
Now since the script executes before the page has loaded, I can't access the <body>, among other things. I'd like to execute some JavaScript after the document has been "loaded" (HTML fully downloaded and in-RAM). Are there any events that I can hook onto when my script executes, that will get triggered on page load?
Look at hooking document.onload or in jQuery $(document).load(...).
Just define <body onload="aFunction()"> that will be called after the page has been loaded. Your code in the script is than enclosed by aFunction() { }
<body onload="script();">
or
document.onload=function ...
edit: according to Peter Bailey in a comment here
window.onload = function ...
is a better way to go
jQuery wrappers that for you. You'll probably find it to be the easiest solution.
You can put a "onload" attribute inside the body
...<body onload="myFunction()">...
Or if you are using jQuery, you can do
$(document).ready(function(){ /*code here*/ })
or
$(window).load(function(){ /*code here*/ })
I hope it answer your question.
Note that the $(window).load will execute after the document is rendered on your page.
Check my answer here.
There's a bunch of other info in that question about executing javascript after page load.
As Daniel says, you could use document.onload.
The various javascript frameworks hwoever (jQuery, Mootools, etc.) use a custom event 'domready', which I guess must be more effective. If you're developing with javascript, I'd highly recommend exploiting a framework, they massively increase your productivity.
Reasonably portable, non-framework way of having your script set a function to run at load time:
if(window.attachEvent) {
window.attachEvent('onload', yourFunctionName);
} else {
if(window.onload) {
var curronload = window.onload;
var newonload = function() {
curronload();
yourFunctionName();
};
window.onload = newonload;
} else {
window.onload = yourFunctionName;
}
}
Using the YUI library (I love it):
YAHOO.util.Event.onDOMReady(function(){
//your code
});
Portable and beautiful! However, if you don't use YUI for other stuff (see its doc) I would say that it's not worth to use it.
N.B. : to use this code you need to import 2 scripts
<script type="text/javascript" src="http://yui.yahooapis.com/2.7.0/build/yahoo/yahoo-min.js" ></script>
<script type="text/javascript" src="http://yui.yahooapis.com/2.7.0/build/event/event-min.js" ></script>
All of these helps do not answer the question: How to run JS script "AFTER" the page load. The onload is executed on the event the page is loaded. I want to run after that. For example, a page has a bunch of scripts run on load. Those can generate further DOM elements. I want to run after all of those functions. How do I do that?