JavaScript

Automation testing is one of the most in-demand skills for modern software testers. However, many testers struggle when learning Playwright because they lack the programming foundation required for automation. This book solves that problem. Automation testing is one of the most in-demand skills for modern software testers. However, many testers struggle when learning Playwright because they lack the programming foundation required for automation. This book solves that problem. Inside this book, you will learn: • JavaScript fundamentals for automation testing • Modern ES6 concepts used in Playwright • TypeScript essentials for automation engineers • Writing Playwright automation tests from scratch • Designing scalable automation frameworks • Page Object Model implementation • Test data management strategies • Parallel execution and CI/CD integration • Debugging, reporting, and test stability techniques • Real-world automation project architectur By the end of this book, you will understand how to design, build, and scale Playwright automation frameworks used in real software projects. Whether you are a manual tester, beginner automation engineer, or QA professional transitioning to modern testing tools, this guide will help you become job-ready with Playwright automation. Start your journey toward becoming a professional Playwright automation engineer today.

Struggling with Playwright tests that pass locally but fail in CI?You are not alone.Flaky tests are the #1 reason automation suites fail in real companies. This book is your complete practical guide to debugging and stabilizing Playwright tests used in production environments.This is not a theory book. This is a real-world, hands-on guide focused on the skills companies actually hire for.In this book you will learn:• What flaky tests really are and why they happen • The 5 real causes of unstable automation tests • How to use Playwright UI Mode, Headed Mode and PWDEBUG • How to use Trace Viewer — the most powerful debugging tool in Playwright • How to capture screenshots, videos and logs in CI pipelines • The correct waiting strategies that eliminate timing issues • How to handle network delays, loaders and dynamic UI • How to prevent test data conflicts in parallel execution • How to configure retries, timeouts and stability settings • How to debug failures in GitHub Actions and CI/CD pipelines • How companies detect and fix flaky tests at scale • Real Playwright interview questions and answersIf you are: • A Selenium tester moving to Playwright • A QA engineer struggling with CI failures • A developer writing end-to-end tests • Preparing for Playwright automation interviewsThen this book will give you a strong real-world advantage.Stop guessing why tests fail. Start debugging like a professional.Become the automation engineer every team needs.

Become a Job-Ready API Automation Engineer Using PlaywrightAPI testing is now a must-have skill for modern QA engineers. Companies expect testers to validate backend systems, automate workflows, and integrate tests into CI/CD pipelines.This practical guide teaches you how to master API Testing using Playwright and TypeScript from scratch — even if you are transitioning from manual testing.In this book, you will learn how to:✔ Understand APIs, HTTP, and JSON from a tester’s perspective ✔ Write real API automation tests using Playwright ✔ Handle authentication, dynamic data, and environments ✔ Design a scalable API test automation framework ✔ Integrate tests into CI/CD pipelines ✔ Combine API and UI testing for faster automation ✔ Prepare for API testing and Playwright interviewsBy the end of this book, you will have the knowledge and confidence to build professional API automation frameworks and advance your QA career.Perfect for: QA Engineers, Manual Testers, Automation Testers, SDET Aspirants

Master Playwright by building real-world automation frameworks from scratch.This hands-on guide is designed for QA engineers, testers, and developers who want to become job-ready Playwright automation engineers.Instead of theory, this book focuses on real projects used in modern companies.Inside this book you will learn how to build:• A complete E-Commerce automation framework • Hybrid API + UI testing architecture • Enterprise SaaS dashboard automation • CI/CD pipelines using GitHub Actions • Dockerized and cloud-parallel test executionYou will also learn advanced topics like: • Network mocking for payment testing • Visual regression testing • Multi-user role-based automation • Handling flaky tests in production • Interview and resume preparationBy the end of this book, you will have multiple portfolio-ready Playwright projects and the confidence to crack automation interviews.Perfect for: QA engineers • Manual testers • SDETs • Developers

If you want to crack Playwright coding interviews confidently, this book gives you exactly what you need — real coding questions, practical examples, and real-world automation scenarios.

Unlike theory-heavy books, this guide provides spoken interview-style answers used by real QA engineers in job interviews.

A step-by-step Playwright + TypeScript guide for manual testers or who wants to switch to becoming automation engineers.

¿Sabés escribir JavaScript, pero sentís que tu código no escala? Este libro cierra la brecha entre "funciona" y "está bien hecho". Closures, async/await, módulos ES6, patrones de diseño y dos proyectos reales para tu portafolio.

La guía más completa en español para dominar React. 17 capítulos, 3 proyectos reales y ejercicios prácticos para conseguir trabajo como desarrollador front-end.

A hands-on journey through the evolution of React. reinvent React from scratch — The entire journey is written as a conversation — Socratic, exploratory, and built on first principles.

Turn your AI application into a scalable, revenue-generating machine. Master complex usage-based billing, per-token pricing, and advanced Stripe workflows. Architect secure API systems and automate global compliance with AI-powered support. The definitive blueprint for engineering a robust monetization engine that scales.

Move beyond basic CRUD and master the architecture of next-generation AI web applications. Build low-latency, type-safe backends using tRPC, Edge Functions, and React Query. Architect intelligent data pipelines for real-time processing and automated AI workflows. The definitive guide to engineering high-performance, production-ready systems for the AI era.

Stop building fragile AI wrappers and start engineering production-ready SaaS architectures. Master the AI-native stack, from pgvector pipelines to secure multi-tenant deployments. Bridge the gap between a prototype and a scalable business with deep-dive engineering. The ultimate blueprint to build software that scales from user zero to one million.

Stop watching tutorials. Start building the web.Most people quit learning JavaScript because they get lost in "Tutorial Hell"—watching videos without ever writing a line of original code. Learn JavaScript in 30 Days breaks that cycle. Through 30 hands-on projects, you won't just learn how to read code; you’ll learn how to think like a developer. Whether you want to switch careers, automate your workflow, or build the next big app, your journey begins on Day 1.

This chapter is part of the "Construct Gamer Starter Kit" collection and provides a guide to developing Memory Matching games, including MahJong, Hidden Pairs, and "Sequence 3+." The tutorial includes coding for both Construct v2 and v3, making it suitable for beginners and experienced web developers alike. It's perfect for anyone looking to create their own customized Memory Matching games with unique artwork and features.