问用useEffect进行强制重呈现

EN

import * as React from "react";
// import "./style.css";

export default function App() {
      let [width, setWidth] = React.useState(window.innerWidth);
      let [height, setHeight] = React.useState(window.innerHeight);

      React.useEffect(() => {
        console.log("useEffect is called");
        window.addEventListener("resize", () => {
        setHeight(window.innerHeight);
        setWidth(window.innerWidth);
        });
      }, []);
 return (
      <div>
         {/* <button onClick={handler}> Submit </button> */}
         <h1>
         {" "}
            {height},{width}{" "}
          </h1>
      </div>
     );
   }