如果我们有兴趣在react.js中使用epic.js，我们可以在epic.js库中使用debounceTime rxjs/操作符。因此，我们可以在epic.js的帮助下，在react.js中使用可观察对象，而不是使用回调。

您可以使用Lodash debounce https://lodash.com/docs/4.17.5#debounce方法。它简单有效。

import * as lodash from lodash;

const update = (input) => {
    // Update the input here.
    console.log(`Input ${input}`);     
}

const debounceHandleUpdate = lodash.debounce((input) => update(input), 200, {maxWait: 200});

doHandleChange() {
   debounceHandleUpdate(input);
}

您还可以使用下面的方法取消debounce方法。

this.debounceHandleUpdate.cancel();

希望对你有所帮助。干杯! !

避免使用event.persist()——你想让React回收合成事件。我认为无论你使用类还是钩子，最干净的方法是将回调函数分成两部分:

没有deboundation的回调 只使用您需要的事件片段调用已撤销的函数(这样合成的事件就可以循环使用)

类

handleMouseOver = throttle(target => {
  console.log(target);
}, 1000);

onMouseOver = e => {
  this.handleMouseOver(e.target);
};

<div onMouseOver={this.onMouseOver} />

功能

const handleMouseOver = useRef(throttle(target => {
  console.log(target);
}, 1000));

function onMouseOver(e) {
  handleMouseOver.current(e.target);
}

<div onMouseOver={this.onMouseOver} />

注意，如果你的handleMouseOver函数从组件中使用状态，你应该使用usemo而不是useRef，并将它们作为依赖项传递，否则你将使用过时的数据(当然不适用于类)。

/**
 * Returns a function with the same signature of input `callback` (but without an output) that if called, smartly
 * executes the `callback` in a debounced way.<br>
 * There is no `delay` (to execute the `callback`) in the self-delayed tries (try = calling debounced callback). It
 * will defer **only** subsequent tries (that are earlier than a minimum timeout (`delay` ms) after the latest
 * execution). It also **cancels stale tries** (that have been obsoleted because of creation of newer tries during the
 * same timeout).<br>
 * The timeout won't be expanded! So **the subsequent execution won't be deferred more than `delay`**, at all.
 * @param {Function} callback
 * @param {number} [delay=167] Defaults to `167` that is equal to "10 frames at 60 Hz" (`10 * (1000 / 60) ~= 167 ms`)
 * @return {Function}
 */
export function smartDebounce (callback, delay = 167) {
  let minNextExecTime = 0
  let timeoutId

  function debounced (...args) {
    const now = new Date().getTime()
    if (now > minNextExecTime) { // execute immediately
      minNextExecTime = now + delay // there would be at least `delay` ms between ...
      callback.apply(this, args) // ... two consecutive executions
      return
    }
    // schedule the execution:
    clearTimeout(timeoutId) // unset possible previous scheduling
    timeoutId = setTimeout( // set new scheduling
      () => {
        minNextExecTime = now + delay // there would be at least `delay` ms between ...
        callback.apply(this, args) // ... two consecutive executions
      },
      minNextExecTime - now, // 0 <= timeout <= `delay` ... (`minNextExecTime` <= `now` + `delay`)
    )
  }

  debounced.clear = clearTimeout.bind(null, timeoutId)

  return debounced
}

/**
 * Like React's `useCallback`, but will {@link smartDebounce smartly debounce} future executions.
 * @param {Function} callback
 * @param {[]} deps
 * @param {number} [delay=167] - Defaults to `167` that is equal to "10 frames at 60 Hz" (`10 * (1000 / 60) ~= 167 ms`)
 */
export const useDebounced = (callback, deps, delay = 167) =>
  useMemo(() => smartDebounce(callback, delay), [...deps, delay])

我在这个问题下找不到任何答案，提到我正在使用的方法，所以只想在这里提供一个替代解决方案，我认为这是最适合我的用例。

如果您正在使用流行的react钩子工具包库react-use，那么有一个名为useDebounce()的实用工具钩子，它以一种相当优雅的方式实现了谴责逻辑。

const [query, setQuery] = useState('');

useDebounce(
  () => {
    emitYourOnDebouncedSearchEvent(query);
  },
  2000,
  [query]
);

return <input onChange={({ currentTarget }) => setQuery(currentTarget.value)} />

有关详细信息，请直接检查库的github页面。

https://github.com/streamich/react-use/blob/master/docs/useDebounce.md

如果你只需要在一个按钮中执行一个请求数据的debounce，提供的代码可能对你有帮助:

创建一个函数，以防止在请求为真或假时使用默认的条件语句 实现useState钩子和useEffect钩子

const PageOne = () => {
 const [requesting, setRequesting] = useState(false);

  useEffect(() => {
    return () => {
      setRequesting(false);
    };
  }, [requesting]);

  const onDebounce = (e) => {
    if (requesting === true) {
      e.preventDefault();
    }
    // ACTIONS
    setLoading(true);
  };

 return (
  <div>
    
    <button onClick={onDebounce}>Requesting data</button>
  </div>
 )
}