createref in functional component

1function CustomTextInput(props) {
2  // textInput must be declared here so the ref can refer to it
3  const textInput = useRef(null);
4  
5  function handleClick() {
6    textInput.current.focus();
7  }
8  
9  return (
10    <div>
11      <input
12        type="text"
13        ref={textInput} />
14    </div>
15  );
16}