Important Points for JavaScript DOM
- Some points to be noted are that a developer should know about the JavaScript DOM tricks and tips for better performance and more interactive web applications. Developers can use dynamic form interaction that includes a multi-step form to handle the form validation and navigation.
- Developers can use Interactive image galleries to handle the thumbnail clicks. By using event delegation that will attach a single event listener to the gallery container so that the developer can update the main images based on the clicked thumbnails.
- Developers can have updates of Real-time Data in the live chat application or a displaying real-time dashboard data. The developer can use WebSocket API or AJAX request to fetch data from the server for retrieving real-time data, DOM manipulation updates the UI in real-time which provides the user with the latest information without the need of manual page refreshing.
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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