Javascript

Javascript is a versatile programming language used for creating dynamic and interactive web content.

Introduction to JavaScriptVariables and Data TypesFunctions and Events
Objects and ArraysControl Flow: Loops and ConditionalsThe Document Object Model (DOM)
Building an Interactive QuizCreating a To-Do List App
Debugging Your CodePracticing with Small Projects
Introduction to Java...Variables and Data T...Functions and EventsObjects and ArraysControl Flow: Loops ...The Document Object ...Building an Interact...Creating a To-Do Lis...Debugging Your CodePracticing with Smal...
Advanced Topics

The Document Object Model (DOM)

Changing the Web Page with JavaScript

The DOM is like a map of your web page. JavaScript can use this map to change anything you see!

  • Change text, images, or styles
  • Add or remove elements
  • Respond to user actions

How to Use the DOM

document.getElementById("header").textContent = "Welcome!";

This code finds an element with the ID "header" and changes its text to "Welcome!".

Why is the DOM Important?

The DOM lets you create interactive, ever-changing web pages. It's how games, quizzes, and animations work on websites.

Real-World Examples

  • Hiding a menu when you click a button
  • Animating an image when you move your mouse over it

Examples

  • Making a dark mode toggle for a website

  • Displaying a user's score after a quiz

In a Nutshell

The DOM lets JavaScript change and control the web page you see.

Next
Building an Interactive Quiz