JavaScript: The Definitive Guide, 5th Edition

Name

Global: the global object — ECMAScript v1: Object → Global

Synopsis

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Global Properties

The global object is not a class, so the following global properties have individual reference entries under their own names. That is, you can find details on the undefined property listed under the name undefined, not under Global.undefined. Note that all top-level variables are also properties of the global object:

Infinity

A numeric value that represents positive infinity.

java

A JavaPackage that represents the java.* package hierarchy

NaN

The not-a-number value.

Packages

The root JavaPackage object.

undefined

The undefined value.

Global Functions

The global object is an object, not a class. The global functions listed here are not methods of any object, and their reference entries appear under the function name. For example, you’ll find details on the parseInt( ) function under parseInt( ), not Global.parseInt( ):

decodeURI( )

Decodes a string escaped with encodeURI( ).

decodeURIComponent( )

Decodes a string escaped with encodeURIComponent( ).

encodeURI

Encodes a URI by escaping certain characters.

encodeURIComponent

Encodes a URI component by escaping certain characters.

escape( )

Encodes a string by replacing certain characters with escape sequences.

eval( )

Evaluates a string of JavaScript code and returns the result.

getClass( )

Returns the JavaClass of a JavaObject

isFinite( )

Tests whether a value is a finite number.

isNaN( )

Tests whether a value is the not-a-number value.

parseFloat( ...