Function.prototype

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

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

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

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.

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.

• Function