Answers for "react native usecallback"

32

useRef

/*
	A common use case is to access a child imperatively: 
*/

function TextInputWithFocusButton() {
  const inputEl = useRef(null);
  const onButtonClick = () => {
    // `current` points to the mounted text input element
    inputEl.current.focus();
  };
  return (
    <>
      <input ref={inputEl} type="text" />
      <button onClick={onButtonClick}>Focus the input</button>
    </>
  );
}
Posted by: Guest on March-29-2020
2

react usecallback

const memoizedCallback = useCallback(
  () => {
    doSomething(a, b);
  },
  [a, b],
);
Posted by: Guest on August-26-2021

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