Input

A single-line text field that’s controlled when you pass value = Some(...) (your app owns the text and is notified through onChange) or uncontrolled when you don’t (salle holds it internally, seeded from defaultValue):

// Controlled — the app drives the value:
val (email, setEmail, _) = useState("")
Input(value = Some(email), onChange = setEmail, inputType = "email")

// Uncontrolled — salle holds the text:
Input(defaultValue = "draft", placeholder = "Notes")

// Validation state:
Input(invalid = true, color = Color.Error)

invalid switches to the error treatment and sets aria-invalid. The controlled/uncontrolled behaviour is the useControllable pattern shared by every form control.