JavaScript Core | VoidX Academy

3. Operators

Logic

Operators

Operators allow you to manipulate data, perform math, and compare values.

➕ Arithmetic Operators

const a = 10;
const b = 3;

console.log(a + b);
console.log(a - b);
console.log(a * b);
console.log(a / b);
console.log(a % b);

Output13
7
30
3.3333333333333335
1

🔍 Comparison: == vs ===

JavaScript has two ways to check equality. The double equals (==) checks if values look similar, attempting to convert types if necessary. The triple equals (===) is strict: it checks both value AND data type. Always use ===.

const num = 5;
const str = "5";

console.log(num == str);
console.log(num === str);

Outputtrue
false

🔀 Logical Operators

Logical operators combine multiple boolean expressions together.

&& (AND) requires ALL conditions to be true.
|| (OR) requires AT LEAST ONE condition to be true.
! (NOT) reverses a boolean.

const isAdult = true;
const hasTicket = false;

console.log(isAdult && hasTicket);
console.log(isAdult || hasTicket);
console.log(!isAdult);

Outputfalse
true
false

3. Operators

Operators

➕ Arithmetic Operators

🔍 Comparison: == vs ===

🔀 Logical Operators

Knowledge Check

3. Operators

Operators

➕ Arithmetic Operators

🔍 Comparison: == vs ===

🔀 Logical Operators

Knowledge Check