Can I override what 'this' points to?

[Carl Erik Kopseng]

I am trying to convert to running my headless Mocha tests in jsdom in stead of Phantom, but I have run into a problem in that "this" does not refer to window. This, for instance, breaks Modernizr, which referes to the global environment by 'this'. It would work in Node, but it seems 'this' refers to something else than 'global' when the scripts are running in jsdom.

So I was wondering if I can set 'this' to refer to something else when running the scripts?

[Godmar Back]

Brian's contextify should provide the correct semantics for 'this', to my knowledge. Is this no longer true?  Does your version of jsdom use contextify?

On Fri, Dec 13, 2013 at 12:03 PM, Carl Erik Kopseng <carl...@gmail.com> wrote:

I am trying to convert to running my headless Mocha tests in jsdom in stead of Phantom, but I have run into a problem in that "this" does not refer to window. This, for instance, breaks Modernizr, which referes to the global environment by 'this'. It would work in Node, but it seems 'this' refers to something else than 'global' when the scripts are running in jsdom.

So I was wondering if I can set 'this' to refer to something else when running the scripts?

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[Hubert Grzeskowiak]

Hi Carl,

"this" is a special variable that always refers to the current object instance or context. So depending on where it's used that might be something very different. In global context it usually is set to the window, so I'd try that first.

GL
Hubert Grzeskowiak