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Js Dom Manipulation — Free Javascript Tutorial

Learn Js Dom Manipulation in Javascript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

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TL;DR: Learn Js Dom Manipulation in Javascript with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 14, 2026

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Js Dom Manipulation in Javascript

DOM (Document Object Model) is the browser's representation of the HTML page as a tree of objects. JS can read and modify it.

Selecting elements: `getElementById()`, `querySelector()` (CSS selector), `querySelectorAll()` (all matches → NodeList).

Changing content: `.textContent = "..."` (text only), `.innerHTML = "..."` (HTML allowed but be careful with XSS).

Changing style: `.style.color = "red"`. Adding/removing classes: `.classList.add()`, `.classList.remove()`, `.classList.toggle()`.

Creating elements: `document.createElement("div")`. Appending: `parent.appendChild(el)` or `parent.append(el)`.

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