Which programming language is primarily used for client-side logic in OutSystems Mobile applications?

The primary programming language used for client-side logic in OutSystems Mobile applications is JavaScript. This selection is significant because JavaScript is inherently designed for creating dynamic and interactive web content, making it an ideal choice for handling user interactions within mobile applications. In the context of OutSystems, JavaScript enables developers to implement specific functionalities that enhance the user experience, such as handling events, manipulating the Document Object Model (DOM), and controlling application behavior on the client-side.

OutSystems leverages JavaScript to allow developers to write custom client-side logic that runs directly in the user's mobile browser or web view, enabling rich, responsive user interfaces. This capability is essential for developing robust mobile applications that require real-time processes without needing constant server communication.

Other options like Python, Java, and C# are traditionally used for server-side programming or backend logic rather than for handling client-side interactions in mobile apps. Therefore, while these languages have their strengths in different areas of application development, they do not serve the primary role of managing client-side logic in OutSystems Mobile applications.