$ and $() jQuery

Question

I can understand that $() is jQuery object but what is $? for example $.fn.each and $.each.

I am confused here.

possible duplicate of [What is the $ in jQuery?](http://stackoverflow.com/questions/1049112/what-is-the-in-jquery) — JasCav, Feb 11 '11 at 17:59
Try to keep in mind, too, that all functions are objects in JavaScript. $ is the jQuery object which is also a function, and $() calls that function. — treeface, Feb 11 '11 at 18:04

score 6 · Accepted Answer · answered Feb 11 '11 at 17:59

$ and jQuery are a function which contains properties.

The jQuery source contains the line

window.jQuery = window.$ = jQuery

This sets $ and jQuery to refer to the same object (which is a function)

The source also sets properties of this object, like

jQuery.each = function(...) { ... };

score 2 · Answer 2 · edited May 23 '17 at 10:24

2

This post should explain it, specifically this comment: Note: By default, jQuery uses "$" as a shortcut for "jQuery".

edited May 23 '17 at 10:24

Community

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answered Feb 11 '11 at 17:59

SquidScareMe

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score 1 · Answer 3 · answered Feb 11 '11 at 18:01

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$ is an alias for jQuery, which is simply a function. When you do $(...), you are calling that function. Functions are also objects in JavaScript, so they can have properties -- $.fn and $.each are just properties of this object.

answered Feb 11 '11 at 18:01

casablanca

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score 0 · Answer 4 · answered Apr 13 '11 at 10:40

In jQuery, the dollar sign $ is simply shorthand for jQuery. Because a $() function is very common in JavaScript libraries, conflicts could arise if more
than one of these libraries is being used in a given page. We can avoid such conflicts by replacing every instance of $ with jQuery in our custom jQuery code.

Extracted text from Learning Jquery .

I think this will be useful to you . :)

$ and $() jQuery

4 Answers4