Question

It fails after doing this:

<script type="text/javascript" src="/js/dojo-release-1.7.2-src/dojo/dojo.js"></script>

throwing an error on the statement (in this version, 1.7.2, it is line 260)

return new XMLHttpRequest();

being: “TypeError: Object doesn’t support this method or property”

The silly thing is that this line is execute a lot of times (maybe even more than 100) without any problem, and it doesn’t seem to be dependent on any variables. Unfortunately, at some point it fails. I swapped the line with:

try{ 
    foo = new window.XMLHttpRequest();
    return foo;
} catch(e)  {
    console.log("OUCH, ERROR.");
    console.log(typeof window.XMLHttpRequest);
    console.log(e);
}

which outputs:

OUCH ERROR.
object
TypeError: Object doesn't support this method or property

I am quite lost, as window.XMLHttpRequest seems to be an object, why can’t I ‘new’ it? Any suggestion on how to debug this would be welcome.

What I find absolutely confusing is that this error only occurs when I go to this page using a link. when I refresh the page using F5, everything works, no errors, nothing.

Moreover, it runs flawless in internet explorer 9, firefox and chrome.

Answer 1

1. Clear cache completely in-browser
2. remove any components you have (activex) which are not native
3. if still issues
   • run xml-validation on your HTML
   • make sure the DOCTYPE is correct
   • check for selfclosing / non-closed tags