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JavaScript Function : Object

Functions are reusable pieces of code that can be executed with different parameters.

Function([param1 : String, [param2 : String, [...]]], body : String) : Function

Same as new Function(param1, param2, ..., body).

Constructors

new Function([param1 : String, [param2 : String, [...]]], body : String) : Function

Creates a new Function that has the supplied parameter names and body. If any parameter name contains a ',', it will be split on the ',' and each component will be added as a parameter. Unless the body needs to be modified at run time, Functions are typically created with the function keyword.

Example:

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Instance Properties

length : Number

The number of parameters specified when the function was defined.

Example:

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prototype : Object

The prototype for objects created by calling this function with the new keyword.

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Instance Methods

apply([thisArg : Object, [parameters : Array]]) : Object

Call this with the this value inside the function bound to thisArg and the parameters to the function from parameters. Returns the result of the function call.

Example:

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bind(thisArg : Object, [param1 : Object, [param2 : Object, [...]]]) : Function

Returns a new function that, when called, will have this equal to thisArg, the first parameter equal to param1, the second parameter equal to param2, etc.

Example:

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call([thisArg : Object, [param1 : Object, [param2 : Object, [...]]]]) : Object

Call this with the this value inside the function bound to thisArg and parameters (param1, param2, ...). Returns the result of the function call.

Example:

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