RSS Feed/News JS: remove event listener from document?

[ENXF NET]

Hey there!

Say, I've got the following code:

JavaScript:

document.addEventListener('mouseup', XF.proxy(this, 'actionEnd'));

Using the XF.proxy (which if I remember correctly will be deprecated in the future), I bind the event to a function.

Now here's my question: how do I remove that event listener again? Using removeEventListener for example did not work for me..

JavaScript:

document.removeEventListener('mouseup', XF.proxy(this, 'actionEnd'));

Even replacing the XF.proxy bit with...

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