每个实例在渲染我的 ES6 React/Reflux 组件两次时接收事件

Each instance receive events when rendering my ES6 React/Reflux component twice

我有一个组件(执行文本输入)在另一个组件中渲染了两次。

当我在其中一个文本输入组件中按下一个键时,每个组件都会收到通知...

该组件采用类似 "14:30" 的时间字符串,并且应允许输入小时和分钟部分。

反流行动:

let TimeActions = Reflux.createActions([
  'setHour',
  'setMinute'
]);

回流混入:

let TimeMixin = {
  init: function() {
    this.listenToMany(TimeActions);
  },

  onSetHour(h) {
    this.time.hour = h;
    this.trigger(this.time);
  },

  onSetMinute(m) {
    this.time.minute = m;
    this.trigger(this.time);
  }
};

React 组件:

export default class TimePicker extends React.Component {

  constructor(props) {
    super(props);

    let parts = this.props.time.split(':'),
        time = {
      hour: parts[0],
      minute: parts[1]
    };

    this.store = Reflux.createStore({
      mixins: [ TimeMixin ],
      time: time
    });

    this.state = time;
  }

  componentDidMount() {
    this.unsubscribe = this.store.listen(this.onTimeChanged.bind(this));
  }
  componentWillUnmount() {
    this.unsubscribe();
  }

  onTimeChanged(time) {
console.log('TIME SET TO', time);
    this.setState(time);
  }

  render() {
    let classes = classNames('time-picker');

    return (
      <div className={classes}>
        <table>
          <tbody>
            <tr>
              <td>
                <input type="text" className="hour" maxLength="2"
                       value={this.state.hour}
                       onChange={this.onHourChanged} />
              </td>
              <td class="separator">:</td>
              <td>
                <input type="text" className="minute" maxLength="2"
                       value={this.state.minute}
                       onChange={this.onMinuteChanged} />
              </td>
            </tr>
          </tbody>
        </table>
      </div>
    );
  }

  onHourChanged(event) {
    TimeActions.setHour($(this.getDOMNode()).val());
  }

  onMinuteChanged(event) {
    TimeActions.setMinute($(this.getDOMNode()).val());
  }
}

我从另一个 React 组件渲染 TimePicker 两次...

...
<TimePicker time={this.props.from} />
<TimePicker time={this.props.to} />
...

...并且在任何实例的分钟输入中键入 "01" 时,我得到以下日志:

TIME SET TO Object {hour: "08", minute: "01"}
TIME SET TO Object {hour: "12", minute: "01"}

知道我做错了什么吗?

这是因为您在组件的构造函数级别创建了两个商店。

您应该在组件外部创建商店,这样无论您的组件有一个还是数百万个实例,都只会存在一个。