使用react日期选择器，需要对今天的日期和选定的日期应用不同的样式

npm install react-datepicker

import DatePicker from "react-datepicker";
import "react-datepicker/dist/react-datepicker.css";

state = {
  today: new Date(),
  selectedDate: null
};

render() {
  return (
    <div>
      <DatePicker
        selected={this.state.selectedDate}
        onChange={date => this.setState({ selectedDate: date })}
        highlightDates={[this.state.today]}
        customInput={<CustomInput />}
      />
    </div>
  );
}

const CustomInput = ({ value, onClick }) => (
  <input
    value={value}
    onClick={onClick}
    style={{
      backgroundColor: value === null ? "white" : "yellow",
      color: value === null ? "black" : "red"
    }}
  />
);