Function.prototype

Function.prototype 屬性表示 Function 的原型物件。

描述

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

屬性

Function.arguments (en-US)
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 This is an obsolete API and is no longer guaranteed to work.
Used to specifiy the number of arguments expected by the function, but has been removed. Use the length property instead.
Function.caller (en-US)
Specifies the function that invoked the currently executing function.
Function.length
Specifies the number of arguments expected by the function.
Function.name (en-US)
The name of the function.
Function.displayName (en-US)
The display name of the function.
Function.prototype.constructor
Specifies the function that creates an object's prototype. See Object.prototype.constructor (en-US) for more details.

方法

Function.prototype.apply()
Calls a function and sets its this to the provided value, arguments can be passed as an Array object.
Function.prototype.bind()
Creates a new function which, when called, has its this set to the provided value, with a given sequence of arguments preceding any provided when the new function was called.
Function.prototype.call()
Calls (executes) a function and sets its this to the provided value, arguments can be passed as they are.
Function.prototype.isGenerator()
Returns true if the function is a generator; otherwise returns false.
Function.prototype.toSource() (en-US)
Returns a string representing the source code of the function. Overrides the Object.prototype.toSource (en-US) method.
Function.prototype.toString() (en-US)
Returns a string representing the source code of the function. Overrides the Object.prototype.toString (en-US) method.

規範

Specification Status Comment
ECMAScript 1st Edition (ECMA-262) Standard Initial definition. Implemented in JavaScript 1.1
ECMAScript 5.1 (ECMA-262)
The definition of 'Function.prototype' in that specification.
Standard  
ECMAScript 2015 (6th Edition, ECMA-262)
The definition of 'Function.prototype' in that specification.
Standard  
ECMAScript (ECMA-262)
The definition of 'Function.prototype' in that specification.
Living Standard  

瀏覽器相容性

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help! (en-US)
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)

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