For JavaScript programming, you might want to grab just a part containing the first N characters from a string. This comes in especially handy while reducing the long text in case of creating a preview or formatting user input. Here’s how one can keep only the first N characters in a JavaScript string. With code …
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Don’t know how to figure out the type of an element when dealing with JavaScript and DOM (Document Object Model)? Here is the answer. The element type can be useful for the implementation of special styles, event handling, or DOM manipulation. In this article, we will discuss several techniques that can be used to get …
Imagine you’re building a search feature for a website. A user types something into the search bar, and you need to check if their input exists in your database of articles. Or think about a messaging app where you want to highlight certain words in a conversation. In both cases, you need to check if …
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JavaScript is the backbone of modern web development, but its dynamic nature can sometimes lead to performance challenges. To address this, Google’s V8 engine—the powerhouse behind Chrome and Node.js—employs advanced optimization techniques like Hidden Classes and Inline Caching. These optimizations are key to making JavaScript run faster and more efficiently. In this, we’ll explore what Hidden Classes and …
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Let’s build a simple stopwatch together using JavaScript! In this tutorial, we’ll create a basic web-based stopwatch from scratch. We’ll cover the HTML structure, apply some CSS for styling, and then write JavaScript to bring the stopwatch to life. Follow along, and feel free to experiment as we go. What You’ll Need Before we start …
document object model it is interface for web documents <div id=”box” style=”width: 50px; height: 50px; background: green; position: absolute; top: 50px; left: 50px;”></div> <button onclick=”moveRight()”>Move Right</button> <script> function moveRight() { let box = document.getElementById(“box”); let left = parseInt(box.style.left) || 0; box.style.left = (left + 50) + “px”; } </script>
install multer npm install multer express create a file upload.js const express = require(“express”); const multer = require(“multer”); const app = express(); const port = 3000; // Configure multer for file uploads const storage = multer.diskStorage({ destination: (req, file, cb) => { cb(null, “uploads/”); }, filename: (req, file, cb) => { cb(null, Date.now() + “-” …
Efficiently Handling Large Data Sets with ‘requestIdleCallback’ In modern web development, handling large datasets efficiently is crucial to ensure smooth user experiences. One powerful tool for managing non-essential tasks without disrupting user interactions is the ‘requestIdleCallback’ API. Below, we’ll explore how to use ‘requestIdleCallback’ effectively, along with best practices for handling large datasets. What is requestIdleCallback? …
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Hey there! If you’re diving into JavaScript, you’ve probably heard about array methods like map, filter, and reduce. These methods are incredibly powerful and can make your code cleaner, more readable, and efficient. I remember when I first started using them—it felt like a whole new world of possibilities opened up. Let me walk you …
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What is EJS? EJS (Embedded JavaScript) is a simple templating language that lets you generate HTML markup with plain JavaScript. It allows you to include dynamic content and logic in your HTML pages without the overhead of a full client-side framework. Setting Up Your Node Application First, ensure that you have Node.js and npm installed …