ionic实现上拉到底内容提示

<!--html代码-->
    <ion-content  has-bouncing = true on-drag-up="scrollDragUp()">
        <div class="content">
            <list-item></list-item>
        </div>
        <ion-infinite-scroll on-infinite="onInfinite()" ng-if="!noMoreItems" distance="1%"><i>正在加载数据</i></ion-infinite-scroll>
    </ion-content>

//js代码
var isShowNomore = false;
$scope.scrollDragUp = function() {
    var currentTop = ionicScrollDelegate.getScrollPosition().top;
    var maxTop = ionicScrollDelegate.getMaxTop();
    if (currentTop - maxTop > 50 && maxTop > 0) {
        //说明可以提示了
        if (!isShowNomore && scope.noMoreItemsAvailable) {
            isShowNomore = true;
            scope.infiniteData = "已经到底啦!";
            $(".infinite-data").show();
            setTimeout(function() {
                $(".infinite-data").hide();
                isShowNomore = false;
            }, 700);
        }

    }
}