How to use listening in react

In React, you can useaddEventListenerFunctions to listen for events. Here is an example:

import React, { useRef, useEffect } from 'react';
function App() {
  const inputRef = useRef(null);
  useEffect(() => {
    ('input', handleInputChange);
    return () => {
      ('input', handleInputChange);
    };
  }, []);
  function handleInputChange(event) {
    ();
  }
  return (
    <div>
      <input ref={inputRef} />
    </div>
  );
}
export default App;

In this example, we define a name calledAppcomponents and useuseRefHook created a name calledinputRefref. We're atuseEffectUsed in hookaddEventListenerFunctions to listeninputEvents and use when component uninstallationremoveEventListenerFunction to remove the listener. existhandleInputChangeIn the function, we can accessto get the value of the input box. Finally, we willinputRefref pass to<input>Elements.

useaddEventListenerFunctions can listen to any event, for exampleclick、mouseover、keydownwait. existuseEffectUsed in hookaddEventListenerandremoveEventListenerFunctions can ensure that event listeners are removed when component unloading to avoid memory leaks.

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