What scripting language is primarily used in Flow Designer?

Flow Designer in ServiceNow primarily utilizes JavaScript as its scripting language. This choice is significant because JavaScript is widely recognized for its versatility and power in web environments, allowing developers to create and manipulate elements dynamically. In the context of ServiceNow, JavaScript is embedded within the platform to facilitate various conditions and actions required for automating processes. This includes scripting for business rules, client scripts, and UI policies, making JavaScript an integral part of the ServiceNow ecosystem.

Additionally, JavaScript's asynchronous capabilities align well with the expectation of handling multiple tasks in Flow Designer efficiently. It allows developers to write scripts that can respond to events without blocking the application's flow, enhancing performance and user experience. This focus on JavaScript reinforces its role as the primary language in Flow Designer, enabling seamless integration and automation throughout the ServiceNow platform.