✅ JavaScript Practice Questions with Answers 💻⚡

🔍 Q1. How do you check if a number is even or odd?
✅ Answer:

let num = 10;
if (num % 2 === 0) {
  console.log("Even");
} else {
  console.log("Odd");
}

🔍 Q2. How do you reverse a string?
✅ Answer:

let text = "hello";
let reversedText = text.split("").reverse().join("");
console.log(reversedText);  // Output: olleh

🔍 Q3. Write a function to find the factorial of a number.
✅ Answer:

function factorial(n) {
  let result = 1;
  for (let i = 1; i <= n; i++) {
    result *= i;
  }
  return result;
}

console.log(factorial(5));  // Output: 120

🔍 Q4. How do you remove duplicates from an array?
✅ Answer:

let items = [1, 2, 2, 3, 4, 4];
let uniqueItems = [...new Set(items)];
console.log(uniqueItems);

🔍 Q5. Print numbers from 1 to 10 using a loop.
✅ Answer:

for (let i = 1; i <= 10; i++) {
  console.log(i);
}

🔍 Q6. Check if a word is a palindrome.
✅ Answer:

let word = "madam";
let reversed = word.split("").reverse().join("");
if (word === reversed) {
  console.log("Palindrome");
} else {
  console.log("Not a palindrome");
}

💬 Tap ❤️ for more!