Selenium, a widely-used open-source test automation framework, is not only effective for browser testing but also for automating tasks like filling out forms using components such as Date Pickers. This tutorial delves into utilizing Selenium with JavaScript to automate Date Picker operations in web forms, providing a detailed guide on setting up the necessary environment using NodeJS, npm, and Selenium JavaScript bindings. It explains the creation of a demo webpage using jQuery's Date Picker and the process of automating it with Selenium WebDriver, both locally and on cloud platforms like LambdaTest, which offers enhanced browser coverage and parallel test execution. The guide emphasizes the importance of setting up an Express server and configuring the necessary routes to interact with Date Picker elements, ultimately leading to a JSON response that confirms successful automation. This comprehensive instruction is a valuable resource for developers and testers seeking to enhance their JavaScript automation skills in web applications.