Articles
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.
arguments Object vs. Rest Parameters in JavaScriptThe arguments object vs. rest parameters in JavaScript, including readability, array behaviour, arrow function differences, and modern best practices.
input.value Returns a String in JavaScriptUnderstand why input.value returns a string, how valueAsNumber and checked differ, and how to handle strings, files and missing FormData entries.
Use object property shorthand and computed property names in JavaScript for cleaner literals, derived keys, method shorthand, and overwrite cautions.
Use HTML constraint validation attributes and APIs to improve client‑side form feedback without replacing accessible errors or server‑side checks.
null and undefined in JavaScriptCompare null and undefined in JavaScript, including assignment, missing values, typeof quirks, arithmetic behaviour, equality, and common bugs clearly.
Object.assign() in JavaScript: Merging and Shallow CopiesUse Object.assign() in JavaScript for merging and shallow copies, with target mutation, overwrite rules, nested‑object cautions, and newer alternatives.
Render lists in React with stable keys, avoiding index and random‑key bugs, preserving component state correctly through filtering, sorting, and reordering.
call, apply, and bind in JavaScriptUnderstand call, apply, and bind in JavaScript, including this context, borrowed methods, callbacks, partial application, and production review caveats.
Type coercion in JavaScript explained clearly, including implicit vs. explicit conversion, equality surprises, string concatenation, and number casting.
Thinking of moving from permanent employment to freelancing? Follow these 5 tips for a smooth transition and establish yourself as a successful freelancer.
Create object URLs for local file previews, revoke them at the right time, and avoid retaining Blob data too long or breaking a browser consumer.
Find the best web developer near you in Brighton, Sussex, or London. This guide covers what to look for, from technical skills to communication and aftercare.
Controlled vs. uncontrolled components in React explained with form examples, refs, validation trade‑offs, and why each approach suits different jobs.
this Changes in JavaScript Event Handlers and MethodsUnderstand why this changes in JavaScript methods and event handlers, including call sites, arrow functions, bind(), event objects, and context bugs.
Primitive vs. reference types in JavaScript explained clearly, including copying behaviour, mutation, equality, and why arrays and objects surprise beginners.
Lifting state up in React explained clearly, including shared state, single sources of truth, child callbacks, and when moving state higher helps.
Five habits of a good web developer, covering clean code, performance, testing, collaboration, curiosity, standards, and communication beyond code.
How to read JavaScript errors and stack traces in the browser, including common error types, line numbers, call stacks, and a practical debugging workflow.