Vue下 touchstart touchend 事件无效失效解决办法

		<van-button
          :disabled="isLoading"
          plain
          type="info"
          @touchstart.native.prevent="touchstart"
          @touchend.native.prevent="touchend"
          style="width:40%;height: 40px;"
          round>对比原图
        </van-button>

@touchstart.native.prevent=“touchstart”
@touchend.native.prevent=“touchend”
增加 .native.prevent

    touchstart() {
      console.log('touchstart')
    },
    touchend() {
      console.log('touchend')
    },