Question

We use an XMLHttpRequest mock up object to test our ExtJs 4.1 app with Jasmine. Now, everythings works perfectly in Chrome and Firefox, but IE versions 7 till 9 are making trouble as always.

There is an error at onreadystatechange function,

if readyState is 1 then SCRIPT575 (cannot continue due to error c00c023f)

if readyState is 2 then SCRIPT10 (required data not yet available)

See this Jsfiddle (search for “error” to jump to line)

Additionally, there is a error TypeError: Object expected.

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What I have read:

I read a couple of posts like this and that, but none of the recommendations fixed it.

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Note:

in Chrome & Firefox all requests only return readyState 4, but in IE readyState the values are repeated from 1 till 4 (?).

Chrome & FF
readyState 4 => OK
readyState 4 => OK
readyState 4 => OK
readyState 4 => OK
readyState 4 => OK
...

IE:
readyState 1 => error
readyState 2 => error
readyState 3 => OK
readyState 4 => OK
readyState 1 => error
...

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Can you guide me how to fix this? I have no clue.

Answer 1

There was a property named response that should be responseText.

Also, I am checking readyState with if( typeof oXhr.readyState !== 'undefined' ) {}

Now my code works in IE8, IE9 (Standard).

However, IE8, IE9 (Quirks) and IE 7 (Quirks & Standard) fail with error:

SCRIPT16389: Unknown error

I will try to fix, but this question is done.