How to Use Function "Constructors"

Instance methods

Function.prototype.apply(): Calls a function with a given this value and optional arguments provided as an array (or an array-like object).
Function.prototype.bind(): Creates a new function that, when called, has its this keyword set to a provided value, optionally with a given sequence of arguments preceding any provided when the new function is called.
Function.prototype.call(): Calls a function with a given this value and optional arguments.
Function.prototype.toString(): Returns a string representing the source code of the function. Overrides the Object.prototype.toString method.
Function.prototype[@@hasInstance](): Specifies the default procedure for determining if a constructor function recognizes an object as one of the constructor's instances. Called by the instanceof operator.