Discover the latest in frontend development with our comprehensive guides, tutorials, and industry insights.
A deep, practical guide to error handling in JavaScript for frontend interviews: sync vs async errors, try/catch with async/await, custom error classes, cause, and user-friendly error patterns.
A deep, interview-ready guide to JavaScript equality: == vs ===, truthy/falsy, ToPrimitive coercion, Object.is, NaN, -0, and common output questions.
A deep, interview-ready guide to JavaScript modules: ESM vs CommonJS, named vs default exports, live bindings, top-level await, Node/browser differences, and common pitfalls.
A practical guide to prototypes in JavaScript: prototype chain, __proto__ vs prototype, new operator, inheritance patterns, and common interview questions.
Interview-ready guide to debounce vs throttle: how they work, when to use each, and clean JavaScript implementations (with leading/trailing options).
A practical guide to Map/Set and WeakMap/WeakSet: key differences, memory behavior, real use cases, and common interview questions with examples.
A practical guide to frontend memory leaks: the most common causes (listeners, timers, DOM refs, closures), how to detect them in Chrome DevTools, and how to fix them.
Interview-focused async/await guide: how await works, common mistakes, parallelizing with Promise.all, error handling patterns, and when to avoid await-in-loop.
A practical guide to JavaScript Promises for interviews: states, chaining rules, error propagation, finally, and when to use Promise.all vs allSettled vs race vs any.
