? JavaScript Arithmetic Operations

Basic Arithmetic Operators

Increment and Decrement

let x = 5;x++;  // x = 6 (post-increment)++x;  // x = 7 (pre-increment)x--;  // x = 6 (post-decrement)--x;  // x = 5 (pre-decrement)

Compound Assignment Operators

let x = 10;x += 5;   // x = x + 5 = 15x -= 3;   // x = x - 3 = 12x *= 2;   // x = x * 2 = 24x /= 4;   // x = x / 4 = 6x %= 5;   // x = x % 5 = 1

Important Notes

• Division by zero returns Infinity or -Infinity in JavaScript, not an error.

• Modulus operator works with integers and floats, returns the remainder.

• + operator also concatenates strings:

console.log(5 + "5"); // "55"console.log("5" + 5); // "55"

Example

let a = 7;let b = 3;console.log(a + b);  // 10console.log(a - b);  // 4console.log(a * b);  // 21console.log(a / b);  // 2.3333...console.log(a % b);  // 1console.log(a ** b); // 343

Want me to cover Math object methods for more complex arithmetic, like rounding, random numbers, or trigonometry?