XPath và CSS Locators cho Tự động hóa Kiểm thử

XPath and CSS locators are the core skills behind reliable UI test automation. Flaky tests, unstable selectors, and “element not found” errors almost always come from poor locator strategy.

In this course, you’ll learn how to build stable XPath and CSS locators for real web applications using Chrome DevTools. The focus is practical: how to read the DOM, understand element relationships, and create selectors that work in Selenium, Playwright, and modern automation frameworks.

You’ll start with locator fundamentals and quickly move into real XPath and CSS patterns used in production test automation:

• XPath syntax, predicates, and relative paths

• XPath functions like text(), contains(), starts-with(), and not()

• XPath axes for locating elements relative to other elements

• CSS selectors, attribute matching, combinators, and pseudo-classes

• XPath vs CSS: when to use each and why

• Debugging and fixing broken locators in DevTools

This course avoids auto-generated selectors and teaches you how to design clean, readable, and maintainable locators that survive UI changes. Every XPath and CSS selector is tested directly in the browser before being used in automation.

Who this course is for:

• QA engineers, SDETs, and test automation engineers

• Selenium and Playwright users

• Developers writing or reviewing UI tests

• Anyone struggling with flaky tests caused by bad locators

By the end of the course, you’ll be able to read any DOM, choose the right locator strategy, and write reliable XPath and CSS selectors with confidence.