put hook into function component

function-component-hook.jsx

// NOW ( currently on alpha 14 nov 2018 ) THIS COMPONENT CAN HAVE STATE
const MyInputComponent ({ }) => {
  const [value, setValue] = React.useState("put some default value here")
  const onChange = (e) => setValue(e.value.target)
  return (
    <input value={value} onChange={onChange} />
  )
}