Web Development
web
frontend
javascript
What is DOM?
Definition
The DOM (Document Object Model) is a programming interface for HTML/XML documents. It represents the page as a tree of objects (nodes) that JavaScript can read and modify. When you change the DOM, the browser re-renders the visible page.
Why It Matters
The DOM is how JavaScript interacts with web pages — adding elements, handling events, and updating content dynamically. Understanding DOM manipulation is essential for frontend development, debugging layout issues, and optimizing rendering performance.