Global Properties/Functions

The JavaScript global properties and functions can be used with all the built-in JavaScript objects.

Global Properties

Property	Description
`Infinity`	A numeric value that represents positive/negative infinity
`NaN`	"Not-a-Number" value
`undefined`	Indicates that a variable has not been assigned a value

Function	Description
`decodeURI()`	Decodes a URI
`decodeURIComponent()`	Decodes a URI component
`encodeURI()`	Encodes a URI
`encodeURIComponent()`	Encodes a URI component
`escape()`	Encodes a string
`eval()`	Evaluates a string and executes it as if it was script code
`isFinite()`	Determines whether a value is a finite, legal number
`isNaN()`	Determines whether a value is an illegal number
`Number()`	Converts an object's value to a number
`parseFloat()`	Parses a string and returns a floating point number
`parseInt()`	Parses a string and returns an integer
`String()`	Converts an object's value to a string
`unescape()`	Decodes an encoded string