React 60s倒计时

 
constructor(props) {
  super(props);
  this.state = {
    tel: 13407163853,
    btnText: '获取验证码',
    timer: 60,
    discodeBtn: false,
    clearInterval: false
  }
}
...
componentWillReceiveProps(nextProps) {
  const { props } = this;
  const { openBox } = nextProps;
  // console.log('nextProps', nextProps);
  // 获取验证码
  if (props.openBox.sendBoxMobileCode !== openBox.sendBoxMobileCode) {
    const { code, message } = openBox.sendBoxMobileCode;
    if (code === '0') {
      this.count();
    } else {
      Toast.info(message);
    }
  }
}
 
count = () => {
let siv = setInterval(() => {
    this.setState({ timer: (timer--), btnText: timer, discodeBtn: true }, () => {
        if (timer === 0) {
            clearInterval(siv);
            this.setState({ btnText: '重新发送', discodeBtn: false })
        }
    });
}, 1000);
}
 
...
render() {
  
return (
  <div>
    <input type="button" value={this.state.btnText} disabled={this.state.discodeBtn} onClick={this.sendCode} />
  </div>
)}
原文地址:https://www.cnblogs.com/hcxwd/p/9188878.html