08_Math.js

console.log(Math); // Object [Math] {}



// ------------------------------------------------------------------------------------------------



// Math Properties :-

// .PI - return the value of PI
console.log(Math.PI); // "3.141592653589793"



// ------------------------------------------------------------------------------------------------



// Math Methods :-

// .abs() - return the absolute (positive) value
console.log(Math.abs(3)); // "3"
console.log(Math.abs(-3)); // "3"

// .sign() - return +1, -1 & 0 based on if the number is positive, negative or zero
console.log(Math.sign(3)); // "1"
console.log(Math.sign(-3)); // "-1"
console.log(Math.sign(0)); // "0"

// .pow() - return the value of second number to be the power of first number
console.log(Math.pow(2, 3)); // "8"
console.log(Math.pow(3, 2)); // "9"

// .sqrt() - return the square root
console.log(Math.sqrt(4)); // "2"
console.log(Math.sqrt(9)); // "3"

// .round() - round off to the nearest integer
console.log(Math.round(2.4)); // "2" (less than 5)
console.log(Math.round(2.5)); // "3" (equal to 5)
console.log(Math.round(2.6)); // "3" (greater than 5)

// .ceil() - round up to the nearest integer, i.e., if +1 after ".", increase the number by +1, else return number itself
console.log(Math.ceil(2)); // "2"
console.log(Math.ceil(2.0)); // "2"
console.log(Math.ceil(2.1)); // "3"

// .floor() - round down to the nearest integer, i.e., if "." exists, remove it)
console.log(Math.floor(2)); // "2"
console.log(Math.floor(2.0)); // "2"
console.log(Math.floor(2.1)); // "2"

// .max() - return the maximum vallue in a set of numbers
console.log(Math.max(1, 2, 3, 4, 5)); // "5"

// .min() - return the minimum vallue in a set of numbers
console.log(Math.min(1, 2, 3, 4, 5)); // "1"

// .random() - return a random number between 0 (inclusive) and 1 (exclusive)
console.log(Math.random()); // "0.4234567890123456"
console.log(Math.random() * 10); // "4.234567890123456"
console.log(Math.floor(Math.random() * 10) + 1); // 1 to 10 (random integer)