JavaScript DOM
Q1. What are the top JavaScript DOM Tips and Tricks?
Answer:
- Selecting DOM Elements
- Changing Element Attributes
- Handling Form Inputs
- Styling Elements Working with CSS (Cascading Styling Sheet) Classes
- Moving through the DOM
- Efficient DOM Manipulation
- Event Delegation – Filtering Dynamic Content
- Handling Asynchronous Operations
- Exploring Browser APIs
- Traversing the DOM
Q2. Should I learn DOM before JavaScript?
Answer:
No, It is generally recommended to learn JavaScript before learning the Document Object Model (DOM).
Q3. What to learn after DOM in JavaScript?
Answer:
After learning the DOM in JavaScript, we can learn many frameworks and libraries like React, Angular, and Vue.js. It’s a personal choice of what we want to learn.
10 JavaScript DOM Tips and Tricks That Every Developer Should Know
The DOM stands for ‘Document Object Model’, it’s a programming interface for HTML (Hypertext Markup Language) and XML (Extensible Markup Language) documents. DOM represents the structure of a document which means a hierarchical tree-like structure, where each existing element in the document are represented as a node in the tree. It also provides properties and methods, including dynamically structured to manipulate the content and styling of Web Pages by interacting with nodes that allow developer changes in the document.
Example:
Imagine you are a developer and building a blog website that includes so many blogs, posts, and comments where users can post the comments and put their reviews. Now you as a developer want to dynamically display the latest comments on the page as well without refreshing the page. So here you can go with the DOM to achieve this shown below.
HTML
<div id="commentsContainer"> <h2>Comments</h2> <ul id="commentsList"></ul> </div> <button id="postComment">Post Comment</button> |
Javascript
// Get references to the necessary DOM elements const commentsListElement = document.getElementById('commentsList'); const postCommentButton = document.getElementById('postComment'); // Attach an event listener to the "Post Comment" button postCommentButton.addEventListener('click', function() { // Create a new comment item const comment = document.createElement('li'); comment.textContent = 'New comment'; // Append the new comment to the comments list commentsListElement.appendChild(comment); }); |
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