Function Objects

In JavaScript everything is an object. in particular, functions are objects too. reminder: An object is a datastructure for storing pairs of name:value (where name is called a property), and a hidden link to another object, via the prototype property.

Function structure

A function declaration creates a function object, which by default inherits from Function.prototype (which in turn, inherits from Object.prototype.

let’s look at an example:

var foo = function () {
	console.log(42);
};

what is actually created is an object:

{
	foo: function() {
		console.log(42);
	},
	prototype: {
		constructor: 

	}
}