JavaScript Math Functions

JavaScript Math functions allows you to perform some mathematical tasks. Common JavaScript Mathematical functions are:

S.No.	Methods	Description
	Math.min() Math.min(0, 150, 30, 20, -8)	Returns the Smallest number Returns -8
	Math.max() Math.max(0, 150, 30, 20, -8)	Returns the Largest number Returns 150
	Math.random()	Returns a Random number between 0 and 1
	Math.round() Math.round(4.7) Math.round(4.4)	Returns a number to the nearest integer. Returns 5 Returns 4
	Math.ceil() Math.ceil(4.4)	Rounds a number up to the nearest integer. Returns 5
	Math.floor() Math.floor(4.7)	Rounds a number down to the nearest integer Returns 4
	toFixed() var x = 9.656; x.toFixed(0); x.toFixed(2); x.toFixed(4);	Fix the decimal places. returns 10 returns 9.66 returns 9.6560
	toPrecision() var x = 9.656; x.toPrecision(); x.toPrecision(2); x.toPrecision(4); x.toPrecision(6);	Returns the total number of digits returns 9.656 returns 9.7 returns 9.656 returns 9.65600
	Math.floor(Math.random() * 11)	Returns a random number between 0 and 10
	Math.pow(x,y)	Returns the value of x to the power of y
	Math.sqrt(x)	Returns the square root of x

NaN - Not a Number
NaN is a JavaScript reserved word indicating that a value is not a number.
var x = "Apple";
isNaN(x); // returns true because x is Not a Number

Conversion Method
parseInt() - Parses its argument and returns an integer
parseFloat() - Parses its argument and returns a floating point number.

JS String Functions

Updated: 12-Mar-19

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