JavaScript Pocket Reference

Function

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JavaScript Pocket Reference

Function

a JavaScript function

Core JavaScript 1.0; JScript 1.0; ECMA v1

Constructor

new Function(argument_names..., body)

This constructor was introduced in JavaScript 1.1, and has been

obsoleted by the function literal syntax of JavaScript 1.2.

Properties

length

The number of named arguments specified when the func-

tion was declared. See

Arguments.length for the number of

argument actually passed. JS 1.1; JScript 2.0; ECMA v1.

prototype

An object which, for a constructor function, defines proper-

ties and methods shared by all objects created with that

constructor function. JS 1.1; JScript 2.0; ECMA v1.

Methods

apply(thisobj, args)

Invokes the function as a method of thisobj, passing the

elements of the array

args as arguments to the function.

Returns whatever value is returned by the invocation of the

function. JS 1.2; JScript 5.5; ECMA v3.

call(thisobj, args...)

Invokes the function as a method of thisobj, using any subse-

quent arguments as arguments to the function. Returns the

value that is returned by the invocation of the function. JS 1.5;

JScript 5.5; ECMA v3.

toString()

Returns a string representation of the function. In some

implementations, this is the actual source code of the func-

tion. JS 1.0; JScript 2.0; ECMA v1.

See Also

Arguments