Sum of Two Numbers

// Adding two numbers
let num1 = 10;
let num2 = 20;
let sum = num1 + num2;

console.log("Sum of", num1, "and", num2, "is:", sum);

// Using template literal
console.log(`Sum of ${num1} and ${num2} is: ${sum}`);

Sum of 10 and 20 is: 30
Sum of 10 and 20 is: 30

This program demonstrates basic arithmetic operations in JavaScript.

Arithmetic Operators

JavaScript supports standard arithmetic operators:

• +: Addition
• -: Subtraction
• *: Multiplication
• /: Division
• %: Modulus (remainder)
• **: Exponentiation (power)

Number Data Type

JavaScript has one number type that handles both integers and floating-point numbers:

javascript
let integer = 42;
let decimal = 3.14;
let negative = -10;

Variable Assignment

The = operator assigns a value to a variable:

javascript
let result = num1 + num2;

Order of Operations

JavaScript follows standard mathematical order:

1. Parentheses
2. Exponentiation
3. Multiplication/Division
4. Addition/Subtraction

Example:

javascript
let result = 2 + 3 * 4; // 14, not 20
let result2 = (2 + 3) * 4; // 20

Type Coercion

JavaScript automatically converts types when needed:

javascript
"5" + 3; // "53" (string concatenation)
"5" - 3; // 2 (number subtraction)

Be careful with type coercion - use explicit conversion when needed!