Built-in Functions in JavaScript | JavaScript Tutorial for Beginners

Publicado el: 15 marzo 2026
en el canal de: Dr. Deepali Tripathi

📌 Built-in Functions in JavaScript | JavaScript Tutorial for Beginners

In this video, we will learn about Built-in Functions in JavaScript. These are predefined functions provided by JavaScript that help developers perform common tasks easily without writing complex code.

Understanding built-in functions will help you write cleaner, faster, and more efficient JavaScript programs.

🚀 What You Will Learn in This Video

✔ What are Built-in Functions in JavaScript
✔ Why Built-in Functions are Important
✔ Examples of Common JavaScript Built-in Functions
✔ How to Use Built-in Functions in Programs
✔ Practical Coding Examples for Beginners

💻 Examples Covered in This Video
// Alert function
alert("Welcome to JavaScript");

// Parse function
let num = parseInt("100");

// Math function
let squareRoot = Math.sqrt(16);

// String function
let text = "Hello";
console.log(text.toUpperCase());

These examples show how JavaScript provides ready-to-use functions to make programming easier.

🎯 Who Should Watch This Video

• JavaScript Beginners
• Students learning Web Development
• Anyone practicing JavaScript programming
• Developers preparing for coding interviews

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