Which language is commonly used for web scripting?

JavaScript is the language commonly used for web scripting due to its integral role in creating interactive and dynamic content on web pages. It allows developers to manipulate HTML and CSS, enabling features such as responsive design, form validation, interactive maps, and animations. JavaScript is executed by web browsers, making it essential for client-side scripting, which enhances the user experience without the need for constant server communication.

Other options, while relevant in the context of web development, serve different purposes. Python is a general-purpose programming language often used for server-side development and scripting but doesn't execute in browsers. Ruby, although it can be used for web development through frameworks like Ruby on Rails, is not primarily known for client-side scripting. HTML, on the other hand, is a markup language used for structuring content on the web, but it does not provide scripting capabilities necessary for dynamic interactions. Thus, JavaScript stands out as the primary choice for web scripting.