Does this technique work with IE8 ? I’ve had success using this for some time with FF, Chrome and IE6 but onload event is not firing for IE8…

The request is sent and valid data comes back – including a document.domain = ‘…’

Any special considerations for IE8 ?

Stoyan – I’ve seen an interesting limitation to the non-blocking JS technique. It turns out that in FF 3+, the “attach a script to the head” technique is only non-blocking until you run into another script tag from within the HTML – even if it only contains inline javascript. See the following example.

[head]
[script]
var js = document.createElement('script');
script.src = "something.js";
var head = document.getElementsByTagName('head')[0];
head.appendChild(js);
[/script]
[\head]
[body]
[img src="A.gif?1"]
[img src="A.gif?2"]
[img src="A.gif?3"]
[script][/script]
[img src="A.gif?4"]
[img src="A.gif?5"]
[img src="A.gif?6"]

[/body]


the external script(s) will load in parallel with images 1-3, but FF will block once you reach the empty script tag until the external scripts are done loading.

the external script(s) will load in parallel with images 1-3, but FF will block once you reach the empty script tag until the external scripts are done loading.

YAHOO.util.Get.script(urls);

Here urls is an array. You may be confused by the bracket notation used to define an array in JavaScript (called “array literal notation”).

This:
var myarray = [1,2,3,4];
is the same as:

var myarray = new Array();
myarray[0] = 1;
//...
myarray[3] = 4;