Operation.js

console.log(2**3); // Exponentiation

console.log(10 % 3); // Modulus

console.log(Math.sqrt(16)); // Square root

console.log(Math.abs(-7)); // Absolute value

console.log(Math.round(4.4)); // Rounding
console.log(Math.round(4.6)); // Rounding

console.log(Math.ceil(4.2)); // Ceiling
console.log(Math.floor(4.8)); // Floor

console.log(Math.min(3, 1, 4, 2)); // Minimum
console.log(Math.max(3, 1, 4, 2)); // Maximum

console.log(Math.random()); // Random number between 0 and 1
console.log(Math.floor(Math.random() * 100) + 1); // Random number between 1 and 100

let st1r = "Hello";
let st2r = "World";
console.log(st1r + " " + st2r); // String concatenation

let num1 = 10;
let num2 = 20;
console.log(num1 + num2); // Numeric addition

console.log("1" + 2); // String and number concatenation

console.log("1" + 2 + 3); // Left to right evaluation

console.log(1 + 2 + "3"); // Left to right evaluation

console.log(+true); // Unary plus
console.log(+false); // Unary plus
console.log(+"123"); // Unary plus
console.log(+""); // Unary 
console.log(+null); // Unary plus
console.log(+undefined); // Unary plus


let x = 5;
++x; // Increment
console.log(x);

let y = 5;
y++; // Increment
console.log(y);

let a = 5;
--a; // Decrement
console.log(a);

let b = 5;
b--; // Decrement
console.log(b);


Postfix increment
let x = 3;
const y = x++; // x is 4; y is 3

Prefix increment
let x = 3;
const y = ++x; // x is 4; y is 4