删除去抖动回调

问题描述

我在React商店中有以下代码：

I have the following code inside of a React store:

  addChangeListener(cb) {
    this.on(CHANGE_EVENT, _.debounce(cb, 100));
  }

  removeChangeListener(cb) {
    _.debounce(cb).cancel();
    this.removeListener(CHANGE_EVENT, cb);
  }

我不相信 removeChangeListener _。debounce 函数，c $ c>正在删除 cb 。如何使用 _.debounce ，还要确保删除正确的 cb ？

I don't believe that removeChangeListener is removing the cb because of the _.debounce function. How can I use _.debounce, and also ensure that the proper cb is removed?

推荐答案

你是对的。 _.debounce 创建一个新功能。所以你需要做类似的事情：

You are correct. _.debounce creates a new function. So you need to do something like:

var debouncedCb;

addChangeListener(cb) {
  debouncedCb = _.debounce(cb, 100)
  this.on(CHANGE_EVENT, debouncedCb);
}

removeChangeListener(cb) {
  this.removeListener(CHANGE_EVENT, debouncedCb);
  _.debounce(cb).cancel();
}

根据您的具体情况，您可能希望附上 debouncedCb 以 cb 以某种方式，以便 removeChangeListener 不会混淆。

Depending on you're specifics, you'll probably want to attach debouncedCb to cb somehow, so that removeChangeListener doesn't get confused.

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