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useFirstMountState

React state hook that returns true if component is just mounted

Usage​

Live Editor
function Demo() {
  const isFirstMount = useFirstMountState();
  const [render, reRender] = useState(0);

  return (
    <div>
      <span>This component is just mounted: {isFirstMount ? "YES" : "NO"}</span>
      <br />
      <button onClick={() => reRender(1)}>{render}</button>
    </div>
  );
};
Result
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API​

useFirstMountState​

Returns​

boolean

Arguments​