JavaScript Pocket Reference, 2nd Edition

Name

Object

Constructor

new Object( );

This constructor creates an empty object to which you can add arbitrary properties.

Properties

All JavaScript objects, how ever they are created, have the following properties.

constructor

A reference to the JavaScript function that was the constructor for the object. JS 1.1; JScript 2.0; ECMA v1.

Methods

All JavaScript objects, how ever they are created, have the following methods.

hasOwnProperty(propname)

Returns true if the object has a non-inherited property with the specified name. Returns false if the object does not have a property with the specified name, or if it inherits that property from its prototype object. JS 1.5; JScript 5.5; ECMA v3.

isPrototypeOf(o)

Returns true if this object is the prototype of o. Returns false if o is not an object or if this object is not its prototype. JS 1.5; JScript 5.5; ECMA v3.

propertyIsEnumerable(propname)

Returns true if this object has a non-inherited enumerable property with the specified name, and returns false otherwise. Enumerable properties are those that are enumerated by for/in loops. JS 1.5; JScript 5.5; ECMA v3.

toLocaleString( )

Returns a localized string representation of the object. The default implementation of this method simply calls toString( ), but subclasses may override it to provide localization. JS 1.5; JScript 5.5; ECMA v3.

toString( )

Returns a string representation of the object. The implementation of this method provided by the Object class is quite generic and does not provide much useful ...