Refs

Slinky supports the new refs API introduced in React 16.3.

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Creating a Ref Object

To start using the new ref API, first create a ref object, which you can use as a ref property instead of a callback. The createRef method in Slinky takes a type parameter so that the ref type is statically typed.

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Refs on HTML Elements

To create a ref for use with an HTML tag, type the ref to store the appropriate elemtn type from the scala-js-dom library.

val myRef = React.createRef[html.Div]

div(ref := myRef)

// somewhere else...
myRef.current.innerHTML

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Refs on Slinky Components

If you want to place a ref on a Slinky component, type the ref to store the Def type inside your component.

@react class MyComponent {
  def foo(): Unit = ...
  ...
}

val myRef = React.createRef[MyComponent.Def]

MyComponent(...).withRef(myRef)

// somewhere else...
myRef.current.foo()