How is jQuery's $ a function and an object?

Question

I mean object as in {} [object Object]. How does it do $(selector) and $.fn.init at the same time?

Can you give me a simple ex

Answer 1

jQuery or $ is an function(you know $ is an alias of jQuery).

// Define a local copy of jQuery
jQuery = function( selector, context ) {
    // The jQuery object is actually just the init constructor 'enhanced'
    return new jQuery.fn.init( selector, context, rootjQuery );
},

In Javascript, everything is an object even function too. Hence You can directly add properties to function.

   jQuery.find = function () {
   }