The syntax for Math any methods is : Math.method(number)

Math.round():-

Math.round(x) returns the nearest integer.

Example:-

Math.round(4.6); // 5

Math.round(4.3); // 4

Math.ceil():-

Math.ceil(x) returns the value of x rounded up to its nearest integer. Example:-

Math.ceil(4.6); // 5

Math.ceil(4.2); // 5

Math.ceil(-4.3); // -4

Math.floor():-

Math.floor(x) returns the value of x rounded down to its nearest integer. Example:-

Math.floor(4.6); // 4

Math.floor(4.2); // 4

Math.floor(-4.3); // -5

Math.trunc():-

Math.trunc(x) returns the integer part of x.

Example:-

Math.trunc(4.6); // 4

Math.trunc(4.2); // 4

Math.sign():-

Math.sign(x) returns if x is negative, null or positive.

Example:-

Math.sign(-4); // -1

Math.sign(0); // 0

Math.sign(4); // 1

Math.pow():-

Math.pow(x, y) returns the value of x to the power of y.

Example:-

Math.pow(2, 3); // 8

Math.pow(8, 2); // 64

Math.sqrt():-

Math.sqrt(x) returns the square root of x.

Example:-

Math.sqrt(16); // 4

Math.sqrt(121); // 11

Math.abs():-

Math.abs(x) returns the absolute (positive) value of x.

Example:-

Math.abs(-6); // 6

Math.abs(1.2); // 1.2

Math.min() and Math.max():-

Math.min() and Math.max() can be used to find the lowest or highest value in a list of arguments.

Example:-

Math.min(0, 150, 30, 20, -8, -200); // -200

Math.max(0, 150, 30, 20, -8, -200); // 150

Math.random():-

Math.random() returns a random number between 0 (inclusive), and 1 (exclusive). Example:-

Math.random(); // 0.3860669187533996

Math.sin():-

Math.sin(x) returns the sine (a value between -1 and 1) of the angle x (given in radians).

If you want to use degrees instead of radians, you have to convert degrees to radians:

Angle in radians = Angle in degrees x PI / 180.

Example:-

Math.sin(90 Math.PI / 180); // 1 (the sine of 90 degrees) Math.sin(30 Math.PI / 180); // 0.5 (the sine of 30 degrees)

Math.cos():-

Math.cos(x) returns the cosine (a value between -1 and 1) of the angle x (given in radians).

If you want to use degrees instead of radians, you have to convert degrees to radians:

Angle in radians = Angle in degrees x PI / 180.

Example:-

Math.cos(0 Math.PI / 180); // 1 (the cos of 0 degrees) Math.cos(60 Math.PI / 180); // 0.5 (the cos of 60 degrees)

Math.log():-

Math.log(x) returns the natural logarithm of x.

The natural logarithm returns the time needed to reach a certain level of growth. Example:-

Math.log(1); // 0

Math.log(2); // 0.6931471805599453

Math.log(10); // 2.302585092994046

Math.log2():-

Math.log2(x) returns the base 2 logarithm of x.

Example:-

Math.log2(8); // 3

Math.log10():-

Math.log10(x) returns the base 10 logarithm of x. Example:-

Math.log10(1000);// 3

Number Method

These number methods can be used on all JavaScript numbers:

Method	Description
toString()	Returns a number as a string
toExponential()	Returns a number written in exponential notation
toFixed()	Returns a number written with a number of decimals
toPrecision()	Returns a number written with a specified length
Valueof()	Returns a number as a number

Example:-

let x = 123;

x.toString(); // 123

(123).toString();// 123

(100 + 23).toString(); // 123

let x = 9.656;

x.toExponential(); // 9.656e+0

x.toExponential(2); // 9.66e+0

x.toExponential(4); // 9.6560e+0

x.toExponential(6); // 9.656000e+0

let x = 9.656;

x.toFixed(); // 10

x.toFixed(2); // 9.66

x.toFixed(4); // 9.6560

x.toFixed(6); // 9.656000

let x = 9.656;

x.toPrecision(); // 9.656

x.toPrecision(2);// 9.7

x.toPrecision(4);// 9.656

x.toPrecision(6);// 9.65600

let x = 123;

x.ValueOf(); // 123

(123).ValueOf(); // 123

(100 + 23).ValueOf(); // 123

In JavaScript, a number can be a primitive value (typeof = number) or an object (typeof = object).

The valueOf() method is used internally in JavaScript to convert Number objects to primitive values.