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Scalajs-react: TypeError no capturado: no se pueden leer las propiedades de nulo (leyendo 'valor')

Tengo el siguiente código para mi aplicación scalajs-react:

 def render(person: Person) = { <.div( <.p("Welcome!"), <.form( <.label("Name:", <.input(^.`type` := "text", ^.cls := "form-control", ^.value := person.name, ^.onChange ==> updatePersonName ) )) ) } def updatePersonName(event: ReactEventFromInput): Callback = { $.modState(person => person.copy(name = event.target.value)) }

Pero veo error:

 Uncaught TypeError: Cannot read properties of null (reading 'value')

¿Que me estoy perdiendo aqui?

about 4 years ago · Juan Pablo Isaza
1 answers
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0

tienes uso event.extract

doctor dice:

Si desea acceder a las propiedades del evento de forma asíncrona (por ejemplo, en una modState(…) )

Por lo tanto, su función updatePersonName debería verse:

 def updatePersonName(event: ReactEventFromInput): CallbackTo[Unit] = { event.extract(_.target.value)(text => $.modState(person => person.copy(name = text)) ) }
about 4 years ago · Juan Pablo Isaza Report
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