JavaScript Number Object

The JavaScript number object enables you to represent a numeric value. It may be integer or floating-point. JavaScript number object follows IEEE standard to represent the floating-point numbers.

By the help of Number() constructor, you can create number object in JavaScript. For example:

If value can't be converted to number, it returns NaN(Not a Number) that can be checked by isNaN() method.

You can direct assign a number to a variable also. For example:

var x=102;//integer value
var y=102.7;//floating point value
var z=13e4;//exponent value, output: 130000
var n=new Number(16);//integer value by number object

Test it Now

Output:

102 102.7 130000 16

JavaScript Number Constants

Let's see the list of JavaScript number constants with description.

Constant	Description
MIN_VALUE	returns the largest minimum value.
MAX_VALUE	returns the largest maximum value.
POSITIVE_INFINITY	returns positive infinity, overflow value.
NEGATIVE_INFINITY	returns negative infinity, overflow value.
NaN	represents "Not a Number" value.

JavaScript Number Methods

Let's see the list of JavaScript number methods with description.

Methods	Description
toExponential(x)	displays exponential value.
toFixed(x)	limits the number of digits after decimal value.
toPrecision(x)	formats the number with given number of digits.
toString()	converts number into string.
valueOf()	coverts other type of value into number.

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