QUnit vs Selenium: What are the differences?

# Introduction
In this Markdown code, we will outline the key differences between QUnit and Selenium to help users understand the distinctions between these popular testing tools.

1. **Language Support**: QUnit is mainly used for testing JavaScript code, whereas Selenium is more versatile and supports various programming languages such as Java, Python, Ruby, and C#.
2. **Testing Scope**: QUnit is designed for unit testing, focusing on isolated components or functions, whereas Selenium is used for end-to-end testing, examining the functionality of an entire application or system.
3. **Browser Interaction**: QUnit runs tests directly in the browser using HTML pages, while Selenium interacts with browsers remotely using WebDriver APIs, providing better compatibility across different browsers.
4. **Test Automation**: Selenium is primarily used for automating web application testing by simulating user interactions, such as clicking buttons and entering text, whereas QUnit is more suitable for conducting automated unit tests for JavaScript code.
5. **Parallel Test Execution**: Selenium allows running tests in parallel across multiple browsers and environments simultaneously, ensuring efficient testing processes, while QUnit does not natively support parallel test execution.
6. **Integration and Compatibility**: Selenium can be seamlessly integrated with various Continuous Integration tools like Jenkins, whereas QUnit may require additional configurations for automation in the CI/CD pipeline.

In Summary, the key differences between QUnit and Selenium lie in their language support, testing scope, browser interaction, test automation capabilities, parallel test execution, and integration with CI tools.