/**
 * 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])

下面是一个使用@Abra方法封装在函数组件中的代码片段 (我们使用织物的UI，只是用一个简单的按钮替换它)

import React, { useCallback } from "react";
import { debounce } from "lodash";

import { PrimaryButton, DefaultButton } from 'office-ui-fabric-react/lib/Button';

const debounceTimeInMS = 2000;

export const PrimaryButtonDebounced = (props) => {

    const debouncedOnClick = debounce(props.onClick, debounceTimeInMS, { leading: true });

    const clickHandlerDebounced = useCallback((e, value) => {

        debouncedOnClick(e, value);

    },[]);

    const onClick = (e, value) => {

        clickHandlerDebounced(e, value);
    };

    return (
        <PrimaryButton {...props}
            onClick={onClick}
        />
    );
}

Julen的解决方案有点难以阅读，这里有更清晰和准确的反应代码，供那些根据标题而不是问题的微小细节绊倒他的人使用。

Tl;dr版本:当你要更新到观察者发送调用一个调度方法，反过来实际上会通知观察者(或执行ajax等)

使用示例组件jsfiddle完成jsfiddle

var InputField = React.createClass({

    getDefaultProps: function () {
        return {
            initialValue: '',
            onChange: null
        };
    },

    getInitialState: function () {
        return {
            value: this.props.initialValue
        };
    },

    render: function () {
        var state = this.state;
        return (
            <input type="text"
                   value={state.value}
                   onChange={this.onVolatileChange} />
        );
    },

    onVolatileChange: function (event) {
        this.setState({ 
            value: event.target.value 
        });

        this.scheduleChange();
    },

    scheduleChange: _.debounce(function () {
        this.onChange();
    }, 250),

    onChange: function () {
        var props = this.props;
        if (props.onChange != null) {
            props.onChange.call(this, this.state.value)
        }
    },

});

如果你不喜欢添加lodash或任何其他包:

import React, { useState, useRef } from "react";

function DebouncedInput() {
  const [isRefetching, setIsRefetching] = useState(false);
  const [searchTerm, setSearchTerm] = useState("");
  const previousSearchTermRef = useRef("");

  function setDebouncedSearchTerm(value) {
    setIsRefetching(true);
    setSearchTerm(value);
    previousSearchTermRef.current = value;
    setTimeout(async () => {
      if (previousSearchTermRef.current === value) {
        try {
          // await refetch();
        } finally {
          setIsRefetching(false);
        }
      }
    }, 500);
  }

  return (
    <input
      value={searchTerm}
      onChange={(event) => setDebouncedSearchTerm(event.target.value)}
    />
  );
}

您可以使用引用变量来存储计时器，然后将其清除。下面是一个不使用任何第三方包在react中实现deboundation的例子

import { useState, useRef } from "react";
import "./styles.css";

export default function App() {
  // Variables for debouncing
  const [text, setText] = useState("");
  const timer = useRef();

  // Variables for throtteling
  const [throttle, setThrottle] = useState(false)


  const handleDebouncing = ({ target }) => {
    clearTimeout(timer.current)

    timer.current = setTimeout(() => {
      callApi();
    }, 300);

    setText(target.value);
  };

  const handleThrottleing = () => {
    callApi()

    setThrottle(true)

    setTimeout(() => {
      setThrottle(false)
    }, 2000)
  }

  const callApi = () => {
    console.log("Calling Api");
  };

  return (
    <div className="App">
      <input type="text" onChange={handleDebouncing} />

      <button onClick={handleThrottleing} disabled={throttle} >Click me to see throtteling</button>
    </div>
  );
}

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>
 )
}