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Free tutorials, solved practice problems and interview prep for QA and automation engineers: Python, Playwright, Selenium, SQL, Git and more.
Learn TypeScript for Playwright from scratch: project setup, playwright.config.ts, async/await, Page and Locator types, typed test data, page objects, typed fixtures and type checking in CI.
TypeScript generics explained simply: generic functions, arrow functions, constraints with extends, keyof, generic interfaces and classes, utility types, and real Playwright examples.
Learn TypeScript classes and objects step by step: constructors, access modifiers, inheritance, getters, static and abstract classes, classes vs interfaces, and the Playwright Page Object Model.
Beginner guide to TypeScript interfaces: syntax, optional and readonly properties, default values, extends, interface vs type, interface vs class, and real Playwright examples.
Learn TypeScript objects step by step: object types, optional and readonly properties, nested objects, arrays of objects, merging and comparing, with real Playwright test examples.
Learn Playwright testing with practical UI automation exercises for forms, tables, alerts, uploads, tabs, iframes, and more. Includes locator examples and tips for reliable end-to-end tests.
Arrays are everywhere in test automation — storing test data, collecting page elements, managing results. TypeScript arrays come with strong typing that
Functions are the building blocks of clean, reusable code. In test automation, you'll use them everywhere — from page actions to custom assertions to utility
Loops let you repeat actions — whether it's iterating through test data, checking multiple elements, or retrying flaky operations. This guide covers every
Conditions let you control which code runs based on different scenarios — essential for building smart Playwright tests that handle popups, dynamic content,
Operators are the building blocks of every TypeScript program. Whether you're writing Playwright test automation or building applications, understanding
Passkeys are replacing passwords across the web, and if your test automation framework can't handle WebAuthn flows, you're already falling behind. Playwright
Take free timed mock tests with answers and explanations.