JavaScript automatically converts types when needed

 1. Implicit Coercion (Automatic)

Example:

console.log("5" + 2); 
// "52"

👉 Number → converted to string

console.log("5" - 2);
// 3

👉 String → converted to number

console.log(true + 1);
// 2

👉 true → 1

2. Explicit Coercion (Manual)

You convert types yourself:

Number("10");   // 10
String(100);    // "100"
Boolean(0);     // false

Mini Practice

let a = "10";
let b = 5;

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

👉 Try to predict output before running

Quick Rule (VERY IMPORTANT)

• + → string concatenation if one is string
• -, *, / → always convert to number