tapahtumankäsittelijät
Tapahtumankäsittelijät, or event handlers, are fundamental components in programming that allow applications to respond to user actions or system events. These events can range from a user clicking a button to a network connection being established. When an event occurs, the system triggers a specific piece of code, known as an event handler, to execute.
The primary purpose of an event handler is to manage and react to these occurrences. For example,
Event handlers are typically associated with specific objects or elements within an application. They define what