LECTURE DAY 50: INTRODUCTION TO JAVASCRIPT

 Introduction to JavaScript

JavaScript is a programming language used to make websites interactive and dynamic. While HTML provides the structure of a webpage and CSS controls its appearance, JavaScript adds behavior and functionality.

What JavaScript Can Do

Display messages and alerts.

Respond to button clicks and user actions.

Change HTML content and styles.

Validate forms.

Create animations and interactive features.

Communicate with web servers and APIs.

Simple Example

let name = "Student";

alert("Welcome, " + name + "!");

This code creates a variable called name and displays a welcome message in the browser.

Key Point

JavaScript can run directly in modern web browsers such as Chrome, Firefox, Edge, and Safari. It is one of the three core technologies of the web: HTML + CSS + JavaScript.