JavaScript
JavaScript HTML DOMJavaScript HTML DOM
JavaScript HTML DOM represents the page as a structured tree.
Read Time
5 min readDifficulty
BeginnerLast Updated
Jun 15, 2026Version
v1.0.0Introduction
The Document Object Model (DOM) is an exact structural copy of the HTML page that the browser builds when the page loads. JavaScript uses this map to find elements, change text, and update CSS styles dynamically.
Key Points
- The DOM represents HTML as a tree of objects.
- JavaScript uses the DOM to manipulate the live page.
- The `document` object represents the entire HTML page.
- Changing the DOM updates the user's screen instantly.