import React, { Component } from 'react'; import './exchange-bar.scss' import Input from '../Input' import classnames from 'classnames' class ExchangeBar extends Component { constructor(props) { super(props) this.state = {} } render() { const {onChange, exchangeNum} = this.props return ( <div className="exchange-bar"> <Input placeholder={'请输入优惠码'} onChange={onChange} type={'number'} /> <button className={classnames({ active: exchangeNum && exchangeNum.length > 0 })}>兑换 </button> </div> ); } } export default ExchangeBar;