Operators

JavaScript Operators Overview​

JavaScript supports a wide range of operators that help you perform various tasks:

Video Explanation​

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1. Arithmetic Operators​

These operators are used to perform mathematical operations.

let a = 10;
let b = 5;

console.log(a + b); // Addition: 15
console.log(a - b); // Subtraction: 5
console.log(a * b); // Multiplication: 50
console.log(a / b); // Division: 2
console.log(a % b); // Modulus: 0
console.log(a ** 2); // Exponentiation: 100

2. Comparison Operators​

These operators compare two values and return a Boolean (true or false).

console.log(a > b); // true
console.log(a < b); // false
console.log(a == 10); // true (loose equality)
console.log(a === "10"); // false (strict equality)

Operator Precedence​

Understanding operator precedence is important to ensure expressions evaluate as intended. JavaScript evaluates operators from highest to lowest precedence.

Mermaid Diagram of Operator Precedence:

Java Operators Overview​

In Java, operators work similarly but come with strict typing:

Video Explanation​

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1. Arithmetic Operators​

int a = 15;
int b = 4;

System.out.println(a + b); // Addition: 19
System.out.println(a - b); // Subtraction: 11
System.out.println(a * b); // Multiplication: 60
System.out.println(a / b); // Division: 3 (integer division)
System.out.println(a % b); // Modulus: 3

2. Comparison Operators​

System.out.println(a > b); // true
System.out.println(a == 15); // true
System.out.println(a != b); // true

3. Logical Operators​

boolean x = true;
boolean y = false;

System.out.println(x && y); // Logical AND: false
System.out.println(x || y); // Logical OR: true
System.out.println(!x);     // Logical NOT: false

Operator Precedence Chart​

Operator precedence in Java follows a strict hierarchy:

Python Operators Overview​

Python operators are straightforward and easy to use:

Video Explanation​

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1. Arithmetic Operators​

a = 20
b = 7

print(a + b)  # Addition: 27
print(a - b)  # Subtraction: 13
print(a * b)  # Multiplication: 140
print(a / b)  # Division: 2.857142857142857
print(a % b)  # Modulus: 6
print(a ** 2) # Exponentiation: 400

2. Comparison Operators​

print(a > b)   # True
print(a == 20) # True
print(a != b)  # True

3. Logical Operators​

x = True
y = False

print(x and y) # False
print(x or y)  # True
print(not x)   # False

Operator Precedence in Python​

C++ Operators Overview​

C++ operators are powerful and similar to those in Java:

Video Explanation​

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1. Arithmetic Operators​

int a = 25;
int b = 8;

std::cout << a + b << std::endl; // Addition: 33
std::cout << a - b << std::endl; // Subtraction: 17
std::cout << a * b << std::endl; // Multiplication: 200
std::cout << a / b << std::endl; // Division: 3 (integer division)
std::cout << a % b << std::endl; // Modulus: 1

2. Comparison Operators​

std::cout << (a > b) << std::endl;   // true
std::cout << (a == 25) << std::endl; // true
std::cout << (a != b) << std::endl;  // true

3. Logical Operators​

bool x = true;
bool y = false;

std::cout << (x && y) << std::endl; // false
std::cout << (x || y) << std::endl; // true
std::cout << (!x) << std::endl;     // false

Operator Precedence Chart​