手机端滑动分页并防抖的代码

var isLoading = false;
var isEnd = false;
var curentPage = 2;


var h5Js = function(){
   return {
      load: function () {
         if(isLoading) {
            return;
         }
         $.ajax({
            type:"GET",
            url:ApiUrl + "/index.php?act=index&op=indexpg",
            dataType:"json",
            data:{curpage : curentPage},
            contentType:"application/json",
            beforeSend:function(){
               isLoading = true;
               $("#loading").html("加载中...");

            },
            success:function (resp){
               if(resp.code == 200){
                  var data = resp.datas;
                  if(data.isLastPage == 1){
                     isEnd = true;
                     $("#loading").text(" -- 到底了 --");
                  } else {
                     curentPage++;
                     $("#loading").html("上滑查看更多");
                  }
                  var html_goods = '';
                  var goods_list = data.goods_list;
                  $.each(goods_list, function (i, item){
                     let htmlitem = '<a class="goods-itemg" href="tmpl/product_detail.html?goods_id='+item.goods_id+'">' +
                           '<div class="googs-item-l">' +
                           '<img src="'+item.goods_image_url +'">'+
                           '</div>\n' +
                           '<div class="goods-item-r">\n' +
                           '<div class="goods-i-title">'+item.goods_name+'</div>\n' +
                           '<div class="goods-i-price">\n' +
                           '<div class="goods-i-p-l">原价￥'+item.goods_marketprice+'</div>\n' +
                           '<div class="goods-i-p-r">1人购买</div>\n' +
                           '</div>\n' +
                           '<div class="goods-i-buy">\n' +
                           '<div class="goods-i-buy-l">￥'+item.goods_price+'</div>\n' +
                           '<div class="goods-i-buy-r">购买</div>\n' +
                           '</div>\n' +
                           '</div>\n' +
                           '</a>';
                     html_goods += htmlitem
                  });
                  $("#goods-list").append(html_goods);
               }else{
                  //error
               }
            },
            error: function(XMLHttpRequest, textStatus, errorThrown){
               isLoading = false;
               $("#loading").html("加载失败...");
            },
            complate:function(){
               isLoading = false;
            }
         });
      }
   }
}();


//执行频率太高 比如需要动一下就要判断执行某动画~~
function scrollHandle(){
   var scrollTop = document.body.scrollTop + document.documentElement.scrollTop;
   var clientHeight = document.documentElement.clientHeight;
   if($("body").height() - scrollTop - clientHeight <= 0) {
      h5Js.load();
   }
}

function debounce(fn, delay){
   var timer = null;
   return function(){
      if(timer){
         clearTimeout(timer)
      }
      timer = setTimeout(fn, delay)
   }
}

window.onscroll = debounce(scrollHandle, 200)