这里使用了antd的Button按钮需要npm安装antd 实现 import{Component}from'react'; import{ Button }from'antd'; classTimerextendsComponent{ constructor(props){ super(props); this.state={ count:60, liked:true, }; } componentDidMount(){ this.props.onRef(this) } countDown(){ const{count}=this.state; if(count=1){...