你试过吗?

function debounce(fn, delay) {
  var timer = null;
  return function() {
    var context = this,
      args = arguments;
    clearTimeout(timer);
    timer = setTimeout(function() {
      fn.apply(context, args);
    }, delay);
  };
}

var SearchBox = React.createClass({
  render: function() {
    return <input type="search" name="p" onChange={this.handleOnChange} />;
  },

  handleOnChange: function(event) {
    debounce(\\ Your handleChange code , 200);
  }
});

使用React Hooks和响应式编程(RxJS)的React ajax debounce和cancel示例解决方案:

import React, { useEffect, useState } from "react";
import { ajax } from "rxjs/ajax";
import { debounceTime, delay, takeUntil } from "rxjs/operators";
import { Subject } from "rxjs/internal/Subject";

const App = () => {
  const [items, setItems] = useState([]);
  const [loading, setLoading] = useState(true);
  const [filterChangedSubject] = useState(() => {
    // Arrow function is used to init Singleton Subject. (in a scope of a current component)
    return new Subject<string>();
  });

  useEffect(() => {
    // Effect that will be initialized once on a react component init.
    const subscription = filterChangedSubject
      .pipe(debounceTime(200))
      .subscribe((filter) => {
        if (!filter) {
          setLoading(false);
          setItems([]);
          return;
        }
        ajax(`https://swapi.dev/api/people?search=${filter}`)
          .pipe(
            // current running ajax is canceled on filter change.
            takeUntil(filterChangedSubject)
          )
          .subscribe(
            (results) => {
              // Set items will cause render:
              setItems(results.response.results);
            },
            () => {
              setLoading(false);
            },
            () => {
              setLoading(false);
            }
          );
      });

    return () => {
      // On Component destroy. notify takeUntil to unsubscribe from current running ajax request
      filterChangedSubject.next("");
      // unsubscribe filter change listener
      subscription.unsubscribe();
    };
  }, []);

  const onFilterChange = (e) => {
    // Notify subject about the filter change
    filterChangedSubject.next(e.target.value);
  };
  return (
    <div>
      Cards
      {loading && <div>Loading...</div>}
      <input onChange={onFilterChange}></input>
      {items && items.map((item, index) => <div key={index}>{item.name}</div>)}
    </div>
  );
};

export default App;

使用ES6 CLASS和React 15.x。X & lodash.debounce 我在这里使用React的refs，因为事件在内部失去了这个绑定。

class UserInput extends React.Component { constructor(props) { super(props); this.state = { userInput: "" }; this.updateInput = _.debounce(this.updateInput, 500); } updateInput(userInput) { this.setState({ userInput }); //OrderActions.updateValue(userInput);//do some server stuff } render() { return ( <div> <p> User typed: { this.state.userInput } </p> <input ref = "userValue" onChange = {() => this.updateInput(this.refs.userValue.value) } type = "text" / > </div> ); } } ReactDOM.render( < UserInput / > , document.getElementById('root') ); <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.5/lodash.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script> <div id="root"></div>

I was searching for a solution to the same problem and came across this thread as well as some others but they had the same problem: if you are trying to do a handleOnChange function and you need the value from an event target, you will get cannot read property value of null or some such error. In my case, I also needed to preserve the context of this inside the debounced function since I'm executing a fluxible action. Here's my solution, it works well for my use case so I'm leaving it here in case anyone comes across this thread:

// at top of file:
var myAction = require('../actions/someAction');

// inside React.createClass({...});

handleOnChange: function (event) {
    var value = event.target.value;
    var doAction = _.curry(this.context.executeAction, 2);

    // only one parameter gets passed into the curried function,
    // so the function passed as the first parameter to _.curry()
    // will not be executed until the second parameter is passed
    // which happens in the next function that is wrapped in _.debounce()
    debouncedOnChange(doAction(myAction), value);
},

debouncedOnChange: _.debounce(function(action, value) {
    action(value);
}, 300)

与其在debounce()中包装handleOnChange，不如在debounce()中包装回调函数中的ajax调用，从而不破坏事件对象。就像这样:

handleOnChange: function (event) {
   debounce(
     $.ajax({})
  , 250);
}

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)}
    />
  );
}