JavaScript® Programmer's Reference

Appendix B. JavaScript Global Objects

There are quite a number of global objects available in JavaScript. Some of these are standard ECMAScript classes such as Array and Boolean, but some are proprietary objects like Enumerator and VBArray. Be sure to read Chapter 6: The Global and Object Objects for more information on global objects.

Table B.1. List of Objects

Object	Support	Description
ActiveXObject	IE3+	Enables and returns a reference to an ActiveX object.
Array	CH1+, FF1+, IE4+, NN3+, O3+, SF1+	Provides for arrays of any data type.
Boolean	CH1+, FF1+, IE4+, NN3+, O3+, SF1+	Provides for true and false values.
Date	CH1+, FF1+, IE3+, NN2+, O3+, SF1+	An object describing localized date and time values as well as providing a means for working with them.
Debug	IE4+	An Internet Explorer-specific object for logging messages to a debug console.
Enumerator	IE4+	Enables enumeration of items in a collection. VBScript Only.
Error	CH1+, FF1+, IE5+, NN6+, O7+, SF1+	The parent object for all exceptions.
Function	CH1+, FF1+, IE3+, NN2+, O3+, SF1+	Represents all functions.
JSON	FF3.5+, IE8+	Provides methods to convert JavaScript values to and from the JavaScript Object Notation (JSON) format. This is supported in Internet Explorer 8 and Firefox 3.5.
Math	CH1+, FF1+, IE3+, NN2+, O3+, SF1+	A built-in object containing properties and methods useful in mathematical computation.
Number	CH1+, FF1+, IE3+, NN2+, O3+, SF1+	Represents all numeric types including integers and floating point values.
Object	CH1+, FF1+, IE3+, NN3+, O3+, SF1+