Web Development
44 articles in this topic
JavaScript Fetch and AJAX Tutorial: GET, POST and Error Handling
Build a small browser app that loads task 7, renders it, sends JSON, and handles HTTP, network, parsing and cancellation failures clearly.
Updated 30 Aug 20265 min readWeb Development
JavaScript Variables: let, const and var Scope with Runnable Examples
Learn how let, const and var differ by tracing real JavaScript programs through block scope, hoisting, object mutation and loop closures.
Updated 29 Aug 20266 min readWeb Development
JSX in React: Syntax, Expressions, Lists and a Runnable Worked Example
Learn the mental model behind JSX, then build and trace a five-topic React component. The examples cover syntax rules, calculations, props, events, conditional output, list keys and common repairs.
Updated 26 Aug 20266 min readWeb Development
Node.js Error Handling Tutorial: Patterns and Worked Examples
Learn where thrown errors, rejected promises, callback errors, and event errors must be handled. Build and test an HTTP order API that logs full causes while returning safe responses.
Updated 25 Aug 20266 min readWeb Development
Buffers in Node.js: A Practical Tutorial with Binary Data Examples
Learn how Node.js Buffers represent bytes, then practise safe allocation, encoding, binary field access, copying, concatenation, and boundary checks.
Updated 23 Aug 20265 min readWeb Development
useMemo and useCallback in React: Runnable Examples, Render Counts and Traps
Learn which identity each React hook preserves, then test the result with a 20,000-product filter and three memoised child rows.
Updated 21 Aug 20266 min readWeb Development
Node.js Tutorial: The Complete Learning Path from Zero to Job-Ready
Stop collecting disconnected Node.js videos. Follow seven ordered stages, prove each one with a small build, and finish with a capstone you can discuss in interviews.
Updated 19 Aug 20265 min readWeb Development
React Tutorial: The Complete Learning Path from JSX to Your First Full App
Learn React in the right order, from the JavaScript prerequisites to components, hooks, routing, Redux, deployed projects, and the full-stack step.
Updated 17 Aug 20266 min readWeb Development
React Virtual DOM and Reconciliation: How Diffing Works and Why the key Prop Matters
Follow React from two element trees to the real DOM, then compare index keys with stable data keys in a reordered list of stateful input nodes.
Updated 15 Aug 20265 min readWeb Development
React Forms: Controlled vs Uncontrolled Components, Validation and the Interview Questions
Follow the value through a state-driven form and a ref-driven form, then choose the right model for live validation, simple inputs and file uploads.
Updated 13 Aug 20265 min readWeb Development
CSS Interview Questions 2026: Selectors, Layout and Responsive Design with Visual Answers
Prepare the CSS questions freshers repeatedly face, with calculated specificity, box-model arithmetic, centering patterns and responsive-layout decisions.
Updated 11 Aug 20266 min read252 viewsWeb Development
React Hooks Explained: useState, useEffect, useMemo, and Custom Hooks with Interview Questions
Build the right mental model for React Hooks, then trace a debounced search component from keystroke to filtered result.
Updated 9 Aug 20266 min readWeb Development