JavaScript DOM Manipulation

What You Will Learn

• 1 Learn the Document Object Model structure and how browsers represent web pages as a tree of nodes.
• 2 Understand how to select DOM elements using methods like getElementById, querySelector, and querySelectorAll.
• 3 Explore techniques for traversing the DOM tree to navigate between parent, child, and sibling nodes.
• 4 Apply methods to modify element content, attributes, and CSS styles dynamically.
• 5 Learn to create, insert, and remove DOM elements for dynamic page updates.
• 6 Understand how to handle events with addEventListener and event object properties.
• 7 Explore event propagation (bubbling and capturing) and delegation patterns.
• 8 Apply form manipulation techniques including validation and input handling.
• 9 Learn about the window object, timers, and browser APIs for asynchronous DOM updates.
• 10 Build a complete interactive web application applying all learned DOM manipulation skills.