Do Javascript Bindings Take Up Memory While Not In Use?

I have a calendar that I've built, and on clicking a day on the calendar, a function is run. You can go month to month on the calendar, and it generates months as it goes. Since ev

Solution 1:

Yes, they all take up memory, but not very much. There's just one function object. Each element has a pointer to that object, so it's probably something like 4 bytes per element.

As Felix King suggested, you can reduce this by using delegation, as there's just a single binding to a container element. However, the savings in memory is offset by increased time overhead -- the handler is invoked every time the event occurs anywhere in the container, and it has to test whether the target matches the selector to which the event is delegated.