How To find Out if Element is Wrapped by jQuery?

Question

How can i find out if an Object is Wrapped by jQuery.

var obj = $('div');

if(obj is a jQuery wrapped object)
{
   then do something
}

I am quite new in the Javascript World.

Thanks in advance.

Answer 1

Here you go:

var isJQuery = obj instanceof jQuery;  // or obj instanceof $;

Answer 2

if (obj.jquery) {
    /* Do something */
}

That's the simplest way. Checking the object's constructor is another option but note that it won't work across global contexts (e.g. between a parent page and a frame).