CODE EXAMPLE FOR JAVASCRIPT

useref material ui

// Using the useRef() hook. Only possible when you're using a function component.
const App = () => {
  const textRef = useRef();
  const showRefContent = () => {
    console.log(textRef.current.value);
  };
  return (
    <div className="App">
      <TextField inputRef={textRef} />
      <button onClick={showRefContent}>Click</button>
    </div>
  );
}