I’m Nasim Khan, is a Software Engineer focused on building efficient and user-friendly web applications. SHe writes about web development, programming fundamentals, and modern technologies, sharing practical insights for developers and learners.
Nasim Khan
How to Remove Filter in CSS
CSS filters are powerful tools used to apply visual effects like blur, brightness, contrast, grayscale, invert, and more. But there are many situations where you want to remove an applied filter — either fully or partially. In this guide, you’ll learn every possible way to remove a filter in CSS, with examples, browser support, and … Read more
Understanding JavaScript Promise
Promises in JavaScript are used to handle asynchronous operations. Let’s walk through what they are and test some examples live. 📘 Basic Promise Example This promise resolves after 2 seconds: const promise = new Promise((resolve, reject) => { setTimeout(() => { resolve(“✅ Promise resolved!”); }, 2000); }); promise.then(result => console.log(result)); Run Example ❌ Promise Rejection … Read more
Understanding HTML Links: A Comprehensive Guide
HTML links, also known as hyperlinks, are a cornerstone of the World Wide Web, enabling users to navigate seamlessly between web pages, documents, and other resources. They are created using the <a> tag in HTML, which stands for “anchor.” This article offers a comprehensive and informative exploration of HTML links, encompassing their syntax, attributes, types, … Read more
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) is a type of malicious exploit of a website where unauthorized commands are transmitted from a user that the web application trusts. It is classified as a server-side vulnerability and targets state-changing requests, not data theft (as is the case with cross-site scripting). CSRF exploits the trust that a web application … Read more
JavaScript: Which of the Following is Not a Valid Way to Define a Variable?
JavaScript (JS) is a lightweight, interpreted (or just-in-time compiled) programming language that supports first-class functions. It’s commonly used for adding interactivity to websites but also powers server-side environments like Node.js and applications such as Adobe Acrobat and Apache CouchDB. JavaScript follows a flexible, dynamic programming model. Variables in JavaScript can be declared using multiple keywords … Read more
Blink Tag HTML: A Hidden Gem of the Early Web
Blink tag in HTML is one of the earliest, most iconic, and controversial elements in web history. While not widely used today, it represents a fascinating part of how the web evolved. Blink was never a part of official HTML standards, yet it played a visible role in how content was presented—literally blinking on screen … Read more
How to Use the Copyright Symbol in HTML: A Beginner’s Guide
The copyright symbol (©) is a legal marker used to assert ownership over content, indicating that it is protected under copyright law. In web development, adding this symbol helps demonstrate professionalism and reinforces that your content is not freely available for reuse. Overview In HTML, there are multiple ways to represent the copyright symbol. This … Read more
browser rendering optimization
Browser rendering optimization involves techniques to improve how web pages are processed and displayed, reducing load times and enhancing user experience. Here’s a concise overview based on current best practices: Key Concepts Browsers render web pages by parsing HTML, building the DOM and CSSOM, creating a render tree, performing layout calculations, and painting pixels to … Read more
CSS content-visibility Property – Complete Guide
Performance is no longer optional on the modern web. Users expect fast-loading pages, and search engines reward sites that deliver a smooth experience. This is where the CSS content-visibility property becomes extremely useful. The content-visibility property allows the browser to skip rendering off-screen content, improving initial load time and overall performance — especially on long … Read more
Web Bluetooth API Usage – A Practical Guide
The Web Bluetooth API allows websites to directly communicate with nearby Bluetooth Low Energy (BLE) devices. This means a web application can connect to hardware devices like fitness trackers, IoT sensors, smart lights, and custom electronics — without installing native apps. This is not a future concept. Web Bluetooth is already being used in real-world … Read more