for循环定时器离开页面无法清除

handleBarrage(data) {

for (let i in data) {

      this.pushHandle(i,data)

}

},

  pushHandle(i, data){

    let setTime = setTimeout(function () {

      console.log(i)

      doommList.push(dataArr(data[i].title, data[i].logo, Math.ceil(Math.random() * 20 + 3), 10));

      page.setData({

        dommshow: doommList

      })

      clearTimeout(setTime)

    }, 5000 * i)

  },

无法清除定时器，各位知道是什么原因吗，数据会不断叠加