JavaScript arithmetic mathematical operations

 JavaScript arithmetic involves performing mathematical operations using operators. 

Basic arithmetic operations include addition (+), subtraction (-), multiplication (*), division (/), and modulus (%, which gives the remainder of a division). 

JavaScript also supports the increment (++) and decrement (--) operators to adjust values by one.

 Additionally, compound assignment operators like +=, -=, *=, and /= combine an arithmetic operation with assignment, streamlining code for updating variables.

Here's a quick breakdown:

1. + (Addition): Adds two values.
2. - (Subtraction): Subtracts one value from another.
3. * (Multiplication): Multiplies two values.
4. / (Division): Divides one value by another.
5. % (Modulus): Returns the remainder of a division.

Examples

1. 5 + 3 // 8
2. 10 - 2 // 8
3. 4 * 7 // 28
4. 20 / 4 // 5
5. 15 % 4 // 3
6. let x = 5; x++ // 6
7. let y = 8; y-- // 7
8. let a = 10; a += 5 // 15
9. let b = 6; b *= 2 // 12
10. let c = 30; c /= 5 // 6

// Addition
let addition = 5 + 3;
console.log("Addition: 5 + 3 =", addition); // 8

// Subtraction
let subtraction = 10 - 2;
console.log("Subtraction: 10 - 2 =", subtraction); // 8

// Multiplication
let multiplication = 4 * 7;
console.log("Multiplication: 4 * 7 =", multiplication); // 28

// Division
let division = 20 / 4;
console.log("Division: 20 / 4 =", division); // 5

// Modulus
let modulus = 15 % 4;
console.log("Modulus: 15 % 4 =", modulus); // 3

// Increment
let x = 5;
x++;
console.log("Increment: x++ =", x); // 6

// Decrement
let y = 8;
y--;
console.log("Decrement: y-- =", y); // 7

// Compound Assignment (Addition)
let a = 10;
a += 5;
console.log("Compound Assignment (Addition): a += 5 =", a); // 15

// Compound Assignment (Multiplication)
let b = 6;
b *= 2;
console.log("Compound Assignment (Multiplication): b *= 2 =", b); // 12

// Compound Assignment (Division)
let c = 30;
c /= 5;
console.log("Compound Assignment (Division): c /= 5 =", c); // 6