useMap

#API

• #

  useMap<K, V>(init?: Iterable<Readonly<[K,V]>>) => ObservableMap<K, V>

  Create and return a Map that triggers rerenders when it's updated.

  const customerAges = useMap<number>([
   ['john', 24],
   ['betsy', 25]
  ]);
  return (
   <>
     {Array.from(ids, ([name, age]) => (
       <div>
         {name}: {age}. <button onClick={() => ids.delete(name)}>X</button>
       </div>
     )}
   </>
  )

  Parameters

  • init?Iterable<Readonly<[K,V]>>

    initial Map entries

  Return Value ObservableMap<K, V>