::before and ::after Pseudo‑Elements in CSS
Using the :before and :after pseudo‑elements in CSS for styling and content insertion. Here, I cover syntax, practical examples, and best practices.
Articles
Guides, page 19 of 22
The guides are the practical part of this archive: working explanations for a specific web development problem, written to show the decision as well as the answer. The subject varies, but the aim is consistent: enough context to use the technique sensibly rather than copy it blindly.
::Before and ::after Pseudo‑Elements in CSS. 
Understanding the Critical Rendering Path. Understanding the Critical Rendering Path
Follow HTML, CSS, and JavaScript through the browser's critical rendering path, then find the resources delaying the first useful render.
Promise.all() vs. Promise.race() in JavaScript. Promise.all()vs.Promise.race()in JavaScriptPromise.all()vs.Promise.race()in JavaScript, with async examples, error behaviour, timeouts, practical use cases, and common mistakes in real code.
Building Polyfills for JavaScript Array and String Methods. Building Polyfills for JavaScript Array and String Methods
Polyfills replicate modern JavaScript methods for compatibility. Here, I explain polyfills and show how to build key examples in unsupported environments.
JavaScript Error Handling Patterns. JavaScript Error Handling Patterns
Error handling in JavaScript is vital for building robust applications. Here, I explore modern patterns like try‑catch, async/await, and global error handlers.
The CSS overflow Property. The CSS
overflowPropertyUnderstand the CSS overflow property, including visible, hidden, scroll, auto, x, and y control, scrollbars, accessibility, and mobile‑browser quirks.
The Difference Between JavaScript Callbacks and Promises. The Difference Between JavaScript Callbacks and Promises
JavaScript callbacks execute functions after tasks, whilst promises offer structured asynchronous handling. I explore their differences, benefits, and uses.
Array.find(), Array.some(), and Array.every() in JavaScript. Array.find(),Array.some(), andArray.every()in JavaScriptArray.find(),Array.some(), andArray.every()in JavaScript explained clearly, including return values, use cases, and when each method fits best.
Understanding CSS Transitions. Understanding CSS Transitions
CSS transitions allow us to create smooth animations between states, enhancing user experience. Here, I discuss how to use transitions with practical examples.
Object.is() vs. Strict Equality in JavaScript. Object.is()vs. Strict Equality in JavaScriptCompare Object.is() and strict equality in JavaScript, including NaN, signed zero, loose equality contrast, and when precision matters in real code.
What is CORS and Why is My JavaScript fetch Blocked? What is CORS and Why is My JavaScript
fetchBlocked?CORS explained for JavaScript fetch errors, including same‑origin policy, server opt‑in, preflight requests, credentials, and what front‑end code can fix.
Creating and Dispatching Custom Events in JavaScript. Creating and Dispatching Custom Events in JavaScript
Create and dispatch custom events in JavaScript with CustomEvent, detail payloads, bubbling, naming choices, cancellation, and component examples.
Mastering CSS for Freelance Web Development Projects. Mastering CSS for Freelance Web Development Projects
CSS is key to delivering responsive, accessible, and visually appealing freelance projects. Here, I explore essential techniques and practices to master CSS.
What are CSS Preprocessors, and Why Should You Use Them? What are CSS Preprocessors, and Why Should You Use Them?
Learn how Sass, Less and Stylus extend CSS with variables, nesting, mixins and modular files, alongside their build‑step and learning‑curve trade‑offs.
Fundamentals of HTML: A Guide. Fundamentals of HTML: A Guide
HTML fundamentals explained through semantic structure, browser parsing, accessibility, and how markup choices affect modern front‑end work in practice.
Object.freeze(), Object.seal(), and preventExtensions(). Object.freeze(),Object.seal(), andpreventExtensions()Object.freeze(),Object.seal(), andpreventExtensions()explained clearly, including what each allows, what they block, and why shallow locking matters.
CSS visibility: Hiding Elements Without Affecting Layout. CSS
visibility: Hiding Elements Without Affecting LayoutCSS
visibilityhides elements without altering layout. Here, I explain its use cases, differences from opacity, and how it maintains document flow.
Controlling Element Transparency with CSS opacity. Controlling Element Transparency with CSS
opacityCSS
opacitycontrols transparency, from fully opaque to invisible. Here, I explain how it works, its interaction with layout and practical examples.