@jdcfe/yep-react/es/count-down/TimerService.js

一套移动端的React组件库

var TimerService = {
  queue: [],
  register: function register(fn) {
    this.queue.push(fn);

    if (!this.timer) {
      this.startTimer();
    }
  },
  unregister: function unregister(fn) {
    this.queue = this.queue.filter(function (f) {
      return f !== fn;
    });

    if (!this.queue.length) {
      clearInterval(this.timer);
      this.timer = null;
    }
  },
  startTimer: function startTimer() {
    var _this = this;

    this.timer = setInterval(function () {
      _this.queue.forEach(function (cb) {
        return cb();
      });
    }, 1000);
  }
};
export default TimerService;