🚀 Master JavaScript Interview Questions — Series!

👋 Hey JavaScript enthusiasts!

Welcome to my JavaScript Interview Questions Series, where I’ll break down must-know JS concepts with real-world examples & use cases.

📌 Every day, I’ll post 2 questions with:
✔️ Clear explanations
✔️ Code snippets (no boring theory!)
✔️ Real-world applications

Let’s level up your JavaScript knowledge! 🚀

Understanding JavaScript: Template Literals & Default Parameters Explained

🟢 Day 1 — JavaScript Essentials

Q1: What are Template Literals in JavaScript?

💡 Template literals (introduced in ES6) allow you to create multi-line strings & embed expressions easily using backticks (`) instead of quotes (‘ or “).

🚀 Why Use Template Literals?
✅ String interpolation — No more messy concatenation
✅ Multi-line strings — Readable & clean
✅ Dynamic expressions — Embed variables inside

🔹 Example: Old Way vs. Template Literals

// 🛑 Before (ES5)
let name = "Monu";
console.log("Hello, " + name + "! Welcome to JavaScript."); 

// ✅ Now (ES6)
console.log(`Hello, ${name}! Welcome to JavaScript.`);

🌍 Real-World Use Case: Dynamic UI Updates

If you’re building a React app, template literals make dynamic rendering super easy:

const username = "Alice";
const message = `Welcome back, ${username}!`;
return <h1>{message}</h1>;

✅ Cleaner JSX
✅ Easy variable injection
✅ Better readability

👉 Use template literals to simplify your code!

🟢 Q2: How Do Default Parameters Work in JavaScript?

💡 Default parameters allow functions to have default values when arguments are missing.

🚀 Why Use Default Parameters?
✅ Avoid undefined values
✅ Write cleaner functions
✅ Prevent errors from missing arguments