How to Handle JavaScript Alert in Selenium WebDriver Using Python?` This article discusses how to handle JavaScript alerts in Selenium WebDriver using Python. It explains that alert windows are widely used across websites and can be categorized into two main types: browser-based alerts and OS-based alerts (windows). The article covers common scenarios where JavaScript alerts occur, such as filling out forms without entering mandatory information, and provides examples of simple, confirm, prompt, and authentication alerts. It also discusses how to handle these alerts using Selenium WebDriver in Python, including switching between the alert window, accepting, sending input, dismissing, and handling unexpected alerts. Additionally, it touches on the use of cloud-based Selenium Grid for running tests at scale and provides an example of modifying a test script to run on LambdaTest. The article concludes by emphasizing the importance of automating different test scenarios related to alert windows using Selenium Python and recommends running tests on a cloud-based Selenium Grid like LambdaTest.