What is the best way to know if an element is in the document?

Question

I want to know if a certain element is in the document.

I tried two options and i want to know which one is the best in terms of resources.

1)

var $lastParent = $(element).parents().last();
var nodeName = $lastParent.prop('nodeName').toLowerCase();
var isInDocument = (nodeName == 'html');

2)

var isInDocument = document.contains(element);

possible duplicate of [Is there an "exists" function for jQuery?](http://stackoverflow.com/questions/31044/is-there-an-exists-function-for-jquery) — Mathletics, Nov 24 '14 at 20:13

score 2 · Answer 1 · edited May 23 '17 at 10:27

2

Try this:

document.contains

or

document.body.contains()

edited May 23 '17 at 10:27

Community

answered Nov 24 '14 at 20:15

Tats_innit

Anubhav · Answer 2 · 2014-11-24T20:19:31.137

1

You can use if ($(element).length) return true;

edited Nov 24 '14 at 20:19

answered Nov 24 '14 at 20:13

Anubhav

2 Answers2