Function.prototype

Summary

The Function.prototype property represents the Function prototype object.

Description

Function objects inherit from Function.prototypeFunction.prototype cannot be modified.

Properties

Function.arguments
An array corresponding to the arguments passed to a function. This is deprecated as property of Function, use the arguments object available within the function instead.
Function.arity
Used to specifiy the number of arguments expected by the function, but has been removed. Use the length property instead.
Function.caller
Specifies the function that invoked the currently executing function.
Function.length
Specifies the number of arguments expected by the function.
Function.name
The name of the function.
Function.displayName
The display name of the function.
Function.prototype.constructor
Specifies the function that creates an object's prototype. See Object.constructor for more details.
Properties inherited from Object:

Methods

Function.prototype.apply()
Applies the method of another object in the context of a different object (the calling object); arguments can be passed as an Array object.
Function.prototype.bind()
Creates a new function which, when called, itself calls this function in the context of the provided value, with a given sequence of arguments preceding any provided when the new function was called.
Function.prototype.call()
Calls (executes) a method of another object in the context of a different object (the calling object); arguments can be passed as they are.
Function.prototype.isGenerator()
Returns true if the function is a generator; otherwise returns false.
Function.prototype.toSource()
Returns a string representing the source code of the function. Overrides the Object.toSource method.
Function.prototype.toString()
Returns a string representing the source code of the function. Overrides the Object.toString method.

Specifications

Specification Status Comment
ECMAScript 1st Edition. Implemented in JavaScript 1.1 Standard Initial definition.
ECMAScript Language Specification 5.1th Edition (ECMA-262)
For Function instances:
ECMAScript Language Specification 5.1th Edition (ECMA-262)
Standard  
ECMAScript Language Specification 6th Edition (ECMA-262)
For Function instances:
ECMAScript Language Specification 6th Edition (ECMA-262)
Draft  

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

See also

Document Tags and Contributors

Last updated by: toothbrush,