60秒倒计时

if (!(/^1[34578]\d{9}$/.test(this.$refs.isPhoneNumber.value))) {
  alert('请输入正确的手机号')
} else {
  alert('短信已发,请尽快使用')
  const TIME_COUNT = 60
  if (!this.timer) {
    this.count = TIME_COUNT
    this.isReally = false
    this.timer = setInterval(() => {
      if (this.count > 0 && this.count <= TIME_COUNT) {
        this.count--
      } else {
        this.isReally = true
        clearInterval(this.timer)
      }
    }, 1000)
  }
}