Welcome to the DOM Manipulation module—where your JavaScript skills start bringing web pages to life!
So far, you’ve learned how to write JavaScript and work with data. Now it’s time to connect your code to the user interface. This module will show you how to use JavaScript to interact with HTML elements, respond to user actions, and build dynamic, interactive experiences right in the browser.
What You’ll Learn
By the end of this module, you’ll be able to:
- Understand what the Document Object Model (DOM) is and how it represents web pages
- Select and manipulate elements on the page using JavaScript
- Change content, styles, and structure dynamically
- Respond to user actions with event listeners
- Handle user input and build form validation logic
- Build a complete interactive To-Do List app from scratch
What’s Inside
Here’s what you’ll explore lesson by lesson:
- The Document Object Model (DOM) – how HTML is represented in the browser
- Selecting Elements – grabbing elements with
getElementById,querySelector, and more - Changing Content and Styles – updating text, images, and CSS classes
- Creating and Removing Elements – building or deleting elements dynamically
- DOM Events – Introduction to Event Handling – making your site respond to clicks, keys, and more
- Handling User Input – working with forms and text fields
- Form Events and Validation – ensuring data is correct before submission
- Event Delegation – efficient event handling on multiple elements
- Class Manipulation with
classList– adding, removing, and toggling CSS classes - Traversing the DOM – moving through parent, child, and sibling elements
- Mini Project: Interactive To-Do List – apply everything you learned to a real-world project
Why DOM Manipulation Matters
Modern websites are interactive by design. Whether it’s a modal that pops up, a form that reacts to input, or a button that adds a new element to the screen—DOM manipulation is what makes the web dynamic.
By mastering this module, you’ll gain the skills needed to create responsive, interactive UIs and prepare for more advanced topics like frontend frameworks and SPA development.
Let’s dive in and start building web pages that respond, react, and feel alive—with the power of DOM manipulation!
