Number() Object : Introduction « Number Data Type « JavaScript Tutorial

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JavaScript Tutorial » Number Data Type » Introduction

5. 1. 2. Number() Object

Syntax


var variable = new Number(value)

The Number object represents numeric value types.

You can create a Number object by specifying a value in the parameter for the number constructor.

Properties and Methods of the Number Object

Property/Method	Description
MAX_VALUE	Specifies the largest value a number can have.
MIN_VALUE	Specifies the smallest value a number can have without being equal to 0.
NaN	Stands for Not a Number. Represents a value that is not equal to any numeric value.
NEGATIVE_INFINITY	A special value that represents a negative infinity value.
POSITIVE_INFINITY	A special value that represents a positive infinity value.
prototype	Represents the prototype for the number class.
toSource()	Returns a string representation of the number object.
toString()	Returns a string representing the specified number object.
valueOf()	Returns the primitive value of a number object as a number data type.

The following example create a number object by calling the Number Constructor.


<html>

    <body>

    <script language="JavaScript">

    <!--

    // Creates a new number object

    var aNum = new Number(3);



    -->

    </script>

    </body>

    </html>

5. 1. Introduction
	5. 1. 1.	Numbers
	5. 1. 2.	Number() Object
	5. 1. 3.	Variables are loosely typed.
	5. 1. 4.	Built-in Values
	5. 1. 5.	Special Numerical Values
	5. 1. 6.	Primitive and Reference Values
	5. 1. 7.	Primitive Types
	5. 1. 8.	The Undefined Type
	5. 1. 9.	The Null Type
	5. 1. 10.	The Boolean Type
	5. 1. 11.	The Number Type
	5. 1. 12.	Number.MAX_VALUE and Number.MIN_VALUE define the outer bounds of the Number value set
	5. 1. 13.	NaN stands for Not a Number
	5. 1. 14.	JavaScript primitive values, Booleans, numbers, and strings, are pseudo-objects
	5. 1. 15.	Reference Types

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