How to find the first element with a given class using jquery?

Question

JavaScript

Hello.

How to find the first element with a given class using jquery?

Answer 1

$('.class:first')
or

$('.class').first()
$('.class').eq(1)

but the first option is the most optimal in terms of resources

Answer 2

$('.class').eq(1)

Answer 3

$('div.myclass').first()

Answer 4

$(document.querySelector('.class'))

Answer 5

document.getElementsByClassName('class-name')[0];