JavaScript Comparison Operators 🔍

Comparison operators in JavaScript compare two values and return a Boolean (true or false).

1️⃣ Types of Comparison Operators

Operator	Name	Example	Returns
==	Equal to	5 == "5"	true (loose equality)
===	Strict equal to	5 === "5"	false (strict equality)
!=	Not equal to	5 != "5"	false
!==	Strict not equal to	5 !== "5"	true
>	Greater than	10 > 5	true
<	Less than	3 < 5	true
>=	Greater than or equal to	5 >= 5	true
<=	Less than or equal to	4 <= 5	true

2️⃣ Loose vs. Strict Equality (== vs. ===)

🔹 == (Loose Equality): Converts data types before comparing.
🔹 === (Strict Equality): Does not convert types, checks both value & type.

console.log(5 == "5");  // true  (type conversion happens)
console.log(5 === "5"); // false (different types: number & string)

✅ Always use === for accurate comparisons!

3️⃣ Not Equal (!= vs. !==)

• != (loose inequality) converts types before comparison.
• !== (strict inequality) does not convert types.

console.log(5 != "5");  // false (values are the same after conversion)
console.log(5 !== "5"); // true  (different types)

✅ Use !== for accurate comparisons!

4️⃣ Comparing Numbers

console.log(10 > 5);   // true
console.log(3 < 5);    // true
console.log(5 >= 5);   // true
console.log(4 <= 2);   // false

5️⃣ Comparing Strings

🔹 JavaScript compares strings based on Unicode order (character-by-character).
🔹 Uppercase letters come before lowercase letters.

console.log("apple" > "banana");  // false ("a" comes before "b")
console.log("cat" > "bat");       // true ("c" comes after "b")
console.log("Zoo" > "apple");     // true (Uppercase "Z" comes before lowercase "a")

6️⃣ Comparing Different Data Types

• JavaScript converts non-numbers to numbers when comparing.

console.log("10" > 5);  // true  ("10" becomes 10)
console.log("2" > "12"); // true  ("2" is greater than "1" in "12")
console.log(true == 1);  // true  (true becomes 1)
console.log(false == 0); // true  (false becomes 0)
console.log(null == 0);  // false (special case)
console.log(null >= 0);  // true  (null becomes 0)
console.log(undefined == 0); // false (undefined is never equal to anything except itself)

🚨 Avoid comparisons with null and undefined as they can behave unexpectedly!

🎯 Summary

✅ Use === and !== instead of == and !=
✅ Be cautious when comparing different data types
✅ String comparisons use Unicode order

🚀 Now you're ready to compare values in JavaScript like a pro! Let me know if you need more details. 😊