javascript - jquery, performance-wise what is faster getElementById or jquery selector?

Question

What is better from performance wise document.getElementById('elementId') or $('#elementId') ? How can I calculate the speed by myself?

Answer 1

If you are concerned about performance, native getElementById is much much faster, but jQuery gives you very handy access to a lot of stuff. So, you might want to use something like :

$( document.getElementById("some_id") ).jQueryCall();

This will give you a better performance, and at the same time, allow you to use jQuery.