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Event

ReasonReact events map cleanly to ReactJS synthetic events. ReasonReact exposes a module called ReactEvent to help you work with events.

ReactEvent module contains all event types as submodules, e.g. ReactEvent.Form, ReactEvent.Mouse, etc.

You can access their properties using the ReactEvent.{{EventName}}.{{property}} method. For example, to access the target property of a ReactEvent.Form.t event, you would use ReactEvent.Form.target.

Since target is a JavaScript Object, those are typed as Js.t. If you're accessing fields on an object, like event.target.value, you'd use Melange's ## object access FFI:

ReactEvent.Form.target(event)##value;

Or, equivalently, using the pipe first operator:

event->ReactEvent.Form.target##value;

More info in the inline docs.