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I'm trying to set an object's "touched" function to another function. I hear about JavaScript and first class functions all the time but still don't have the hang of it. Here's what I have:

customClose.touched = this._close.bind(this);

customClose has a function called "touched" that is empty by default. I want it to be set to another function, this._close.bind, which takes a parameter. How can I make this work?

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2 Answers 2

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This will do the trick:

customClose.touched = this._close.bind;

Note that if you use this inside of this._close.bind, when calling customClose.touched(p), this will refer to customClose.

If you want this to continue referring to this._close, you can use bind:

customClose.touched = this._close.bind.bind(this._close);
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I just found out the problem was something else entirely. My original line works fine. I think my kind of confusing problem and explanation led to your somewhat verbose answer, but I think you were on the right track if there were actually a problem. Thanks! –  Captain Stack Jul 30 '13 at 2:15
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It turns out my original implementation was correct. The problem was that the close button had moved due to another change I had made. Since it's invisible, I didn't notice. Binding the function to the object's function is done as follows:

customClose.touched = this._close.bind;
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