useEventListener

轻松使用 EventListener。

Usage

实时编辑器

function Demo() {
  const buttonRef = useRef<HTMLButtonElement>(null);
  const [state, setState] = useState("NO DB Click");

  const onDBClick = () => {
    setState("DB Clicked");
  };

  const onClick = (event: Event) => {
    console.log("button clicked!", event);
  };

  const onVisibilityChange = (event: Event) => {
    console.log("doc visibility changed!", {
      isVisible: !document.hidden,
      event,
    });
  };

  // example with window based event
  useEventListener("dblclick", onDBClick);

  // example with document based event
  useEventListener("visibilitychange", onVisibilityChange, () => document);

  // example with element based event
  useEventListener("click", onClick, buttonRef);

  return (
    <div>
      <p>{state}</p>
      <button ref={buttonRef}>Click me</button>
    </div>
  );
};

结果

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API

useEventListener

Returns

void

Arguments

参数名	描述	类型	默认值
eventName	事件名称	string (必填)	-
handler	事件处理器	(event: any) => void (必填)	-
element	dom元素	Element | EventTarget | Document | HTMLElement | Window | null | undefined	window
options	监听选项	boolean | AddEventListenerOptions | undefined	-