Assignment Operator (=): Assigns a value to a variable.

let x = 10;
let y = x; // y is now 10

Arithmetic Operators: Perform mathematical calculations.

• + (Addition): 5 + 3 is 8
• - (Subtraction): 5 - 3 is 2
• * (Multiplication): 5 * 3 is 15
• / (Division): 10 / 4 is 2.5
• % (Modulus/Remainder): 10 % 3 is 1 (10 divided by 3 is 3 with a remainder of 1)
• ** (Exponentiation - ES2016): 2 ** 3 is 8 (2 to the power of 3)
• ++ (Increment): Increases a number by 1. x++ (postfix) or ++x (prefix).
• -- (Decrement): Decreases a number by 1. x-- (postfix) or --x (prefix).

let a = 5;
let b = 2;
console.log(a + b); // 7
console.log(a * b); // 10
console.log(a / b); // 2.5
console.log(a % b); // 1
console.log(a ** b); // 25 (5*5)

a++; // a is now 6
b--; // b is now 1