by Shunku
JavaScript: Promise vs async/await
Compare Promise chains and async/await syntax in JavaScript. Learn when to use each approach and how to handle errors, parallel execution, and common patterns effectively.
25 post found
Compare Promise chains and async/await syntax in JavaScript. Learn when to use each approach and how to handle errors, parallel execution, and common patterns effectively.
Understand JavaScript's event loop, call stack, and task queues. Learn why JavaScript is single-threaded yet can handle asynchronous operations efficiently.
Learn how to use JavaScript Proxy to intercept and customize fundamental object operations. Discover practical use cases like validation, logging, and reactive programming.
Master React's memoization tools - useMemo, useCallback, and React.memo - and learn when to use them for optimal performance.
Dive deep into JavaScript's iteration protocol. Learn how iterators work under the hood, create custom iterables, and harness the power of generator functions.
Demystify React's rendering behavior - learn what triggers re-renders, common misconceptions, and how to prevent unnecessary renders.
Learn how to use JavaScript's powerful higher-order functions to write cleaner, more expressive code. Master map, filter, reduce, and learn when to use each.
Learn how to create reusable custom hooks in React to share logic between components while following best practices.
Master JavaScript closures by understanding lexical scope, the scope chain, and practical use cases that make closures indispensable in modern JavaScript.
Master advanced React component patterns - Compound Components, Render Props, and Higher-Order Components - to build flexible and reusable UI components.
Learn how to use React Suspense and lazy loading to improve your app's performance by code splitting and managing loading states.
Learn the fundamentals of React Testing Library - how to render components, query elements, and write tests that focus on user behavior rather than implementation details.
Master testing user interactions in React - learn the differences between fireEvent and userEvent, and how to test clicks, inputs, forms, and keyboard events.
Learn how to test React components that fetch data using Mock Service Worker (MSW) - a powerful approach to mocking API calls at the network level.
Learn how to test React custom hooks using renderHook from Testing Library - covering state updates, async operations, and common patterns.
Learn effective mocking strategies for React tests - from mocking modules and components to spying on functions and handling common scenarios.
Understand when and how to use snapshot testing effectively in React - including inline snapshots, custom serializers, and common anti-patterns to avoid.
Learn the fundamentals of Cypress - installation, test structure, basic commands, and writing your first end-to-end test.
Master Cypress selectors, command chaining, and custom commands to write clean, maintainable E2E tests.
Master cy.intercept for network mocking in Cypress - intercept requests, stub responses, test error states, and wait for API calls.
Learn how to work with variables, closures, and aliases in Cypress to share data between commands and tests effectively.
Master debugging techniques in Cypress including time travel, command logs, snapshots, and browser DevTools integration.
Compare Cypress and Playwright across architecture, features, performance, and use cases to choose the best E2E testing framework for your project.
Learn the fundamentals of Next.js App Router including file-based routing, layouts, dynamic routes, and navigation patterns.
Learn about React Server Components (RSC), when to use Server vs Client Components, and how to build efficient applications with the 'use client' directive.