I’ve read the jQuery documentation on event handling, but I still can’t really understand

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Editorial Team

Asked: May 26, 20262026-05-26T23:05:52+00:00 2026-05-26T23:05:52+00:00

I’ve read the jQuery documentation on event handling, but I still can’t really understand what I should do.

I have a mobile app where content is loaded with ajax, so events can’t be bound at document onLoad for that content.

As my application grow I now start to be concerned that wrong event handling can give performance problem.

What is the implications on performance choosing between on(), live() and delegate() ?

Something else to take into consideration?

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Editorial Team · Answer 1 · 2026-05-26T23:05:53+00:00

Editorial Team

From jQuery 1.7, the official (and most performant) way to bind events is .on and .off. It’s fastest when combined with an id based selector:

$('#id').on('click', myHandler);

.on supercedes .live .delegate and .bind, see here for more info:

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