HarmonyOS 请问ArkTS如何实现倒计时功能？

@Entry
@Component
struct Index {
  private Max_Seconds = 60
  @State count: number = this.Max_Seconds
  build() {
    Column() {
      Button(this.count == this.Max_Seconds ? "获取验证码" : this.count + "s").onClick(() => {
        let intervalId = setInterval(() => {
          console.log("=======" + this.count)
          if (this.count <= 0) {
            this.count = this.Max_Seconds
            clearInterval(intervalId)
          }else{
            this.count--
          }

        }, 1000)
      }).enabled(this.count == this.Max_Seconds ? true : false)
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
  }
}