JavaScript: The Definitive Guide, Fourth Edition

Name

Function — a JavaScript function

Availability

JavaScript 1.0; JScript 1.0; ECMAScript v1

Inherits from/Overrides

Inherits from Object

Synopsis

function functionname(argument_name_list) // Function definition statement 
{
    body 
} 
function (argument_name_list) { body } // Unnamed function literal; JavaScript 1.2 functionname(argument_value_list)      // Function invocation

Constructor

new Function(argument_names..., body) // JavaScript 1.1 and later

Arguments

argument_names...

Any number of string arguments, each naming one or more arguments of the Function object being created.

body

A string that specifies the body of the function. It may contain any number of JavaScript statements, separated with semicolons, and may refer to any of the argument names specified by previous arguments to the constructor.

Returns

A newly created Function object. Invoking the function executes the JavaScript code specified by body.

Throws

SyntaxError

Indicates that there was a JavaScript syntax error in the body argument or in one of the argument_names arguments.

Properties

arguments[]

An array of arguments that were passed to the function. Deprecated.

caller

A reference to the Function object that invoked this one, or null if the function was invoked from top-level code. Deprecated.

length

The number of named arguments specified when the function was declared.

prototype

An object which, for a constructor function, defines properties and methods shared by all objects created with that constructor function. ...