Math In JavaScript - basic
Overview
is a built-in object that has properties and methods for mathematical constants and functions. It’s not a function object. Some of Useful common method of math are abs(), ceil(), floor(), min(), max(), random(), round(), sqrt().
Let’s a discus about them.
abs()
abs() is the method that returns the absolute value of a number. That means it return a positive value though calculated result is negative.
example:
const a=10, b=20;
console.log(Math.abs(a-b)) // output: 10 (return absolute value of result)
ceil()
This method is use to return a integer number from float number. ceil() method always rounds a number up to the next largest integer.
example:
console.log(Math.ceil(3.2)) // output: 4
floor()
This method returns the largest integer less than or equal to a given number.
example:
console.log(Math.floor(3.7)) // output: 3
round()
This method returns the value of a number rounded to the nearest integer.
example:
console.log(Math.round(3.4)) // output: 3
console.log(Math.round(3.5)) // output: 4
random()
This method return random float number from 0 to 1. You can control the range of random number.
example:
console.log(Math.random())// output : from 0 to 1 random number (float)
console.log(Math.random() * 1000)// output : from 0 to 1000 random number(float)
console.log(Math.floor(Math.random() * 1000))// output : from 0 to 1000 random number (integer)
sqrt()
This method function returns the square root of a number.
example:
console.log(Math.sqrt(4)) // output: 2
max()
This method return the maximum number that give you as parameter.
example:
console.log(Math.max(1, 2, 6, 4, 8, 3)) // output: 8
min()
This method return the minimum number that give you as parameter.
example:
console.log(Math.min(1, 2, 6, 4, 8, 3)) // output: 1
