Method stateChange

src/Datepicker/Datetime.js:161–169

(state, pop)

  }

  stateChange (state, pop) {
    // setTimeout wait checkClickAway completed
    setTimeout(() => {
      this.setState(state);
      if (pop && this.props.onChange) {
        this.props.onChange(this.getValue());
      }
    }, 0);
  }

  stageChange (stage) {
    this.stateChange({ stage });