use requestAnimationFrame for window scroll event

@@ -45,7 +45,7 @@ $fixTitleBar.css({
 minBrandListTop = brandSwipe + $('.hot-brand').outerHeight() + $('.banner-top').outerHeight();
 minBrandListTop = brandSwipe + $('.hot-brand').outerHeight() + $('.banner-top').outerHeight();
 $brandList.last().append($fixTitleBar);
 $brandList.last().append($fixTitleBar);
 
 
-$(window).scroll(function() {
+function scrollHandler() {
     var scrTop = $(window).scrollTop();
     var scrTop = $(window).scrollTop();
 
 
     if ($brandList.eq(0).offset().top < minBrandListTop) {
     if ($brandList.eq(0).offset().top < minBrandListTop) {
@@ -62,6 +62,10 @@ $(window).scroll(function() {
         }
         }
 
 
     });
     });
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
 
 
 function changeBackground() {
 function changeBackground() {

@@ -107,12 +107,16 @@ $nav.on('touchend touchcancel', function(e) {
     }
     }
 });
 });
 
 
-$(document).scroll(function() {
+function scrollHandler() {
     var $c = $infos.not('.hide');
     var $c = $infos.not('.hide');
 
 
     if ($(window).scrollTop() + winH >= $(document).height() - 0.25 * $c.height()) {
     if ($(window).scrollTop() + winH >= $(document).height() - 0.25 * $c.height()) {
         loadMore($c, state[curType]);
         loadMore($c, state[curType]);
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
 
 
 $nav.on('touchstart', function(e) {
 $nav.on('touchstart', function(e) {

@@ -40,8 +40,12 @@ if ($tag.length > 0) {
     });
     });
 }
 }
 
 
-$(document).scroll(function() {
+function scrollHandler() {
     if ($(window).scrollTop() + winH >= $(document).height() - 0.25 * $infos.height()) {
     if ($(window).scrollTop() + winH >= $(document).height() - 0.25 * $infos.height()) {
         loadMore($infos, setting);
         loadMore($infos, setting);
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });

@@ -138,8 +138,12 @@ $('.maybe-like p').on('touchstart', function (e) {
 });
 });
 
 
 //srcoll to load more
 //srcoll to load more
-$(window).scroll(function () {
+function scrollHandler() {
     if ($(window).scrollTop() + winH >= $(document).height() - 50) {
     if ($(window).scrollTop() + winH >= $(document).height() - 50) {
         search();
         search();
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });

@@ -91,9 +91,8 @@ var updateLayerPosition = (function() {
    };
    };
 })();
 })();
 
 
-$win.scroll(function() {
-  updateLayerPosition();
+$(window).scroll(function() {
+    window.requestAnimationFrame(updateLayerPosition);
 });
 });
 
 
-
 $doc.on('ready', updateLayerPosition);
 $doc.on('ready', updateLayerPosition);

@@ -206,9 +206,8 @@ favContentHammer.on('tap', function(e) {
     });
     });
 });
 });
 
 
-// 上拉加载更多
-$(document).scroll(function() {
 
 
+function scrollHandler() {
     if ($(window).scrollTop() + winH >= $(document).height() - footerH) {
     if ($(window).scrollTop() + winH >= $(document).height() - footerH) {
 
 
         if (brandTab) {
         if (brandTab) {
@@ -231,4 +230,8 @@ $(document).scroll(function() {
             }
             }
         }
         }
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });

@@ -18,13 +18,17 @@ var setting = {
     end: false
     end: false
 };
 };
 
 
+function scrollHandler() {
+    if ($(window).scrollTop() + winH >= $(document).height() - 0.25 * $infoList.height()) {
+        loadMore($infoList, setting, '/home/myguang');
+    }
+}
+
 //对于有逛收藏的页面进行事件处理
 //对于有逛收藏的页面进行事件处理
 if ($infoList.length > 0) {
 if ($infoList.length > 0) {
     info.initInfosEvt($infoList);
     info.initInfosEvt($infoList);
 
 
     $(window).scroll(function() {
     $(window).scroll(function() {
-        if ($(window).scrollTop() + winH >= $(document).height() - 0.25 * $infoList.height()) {
-            loadMore($infoList, setting, '/home/myguang');
-        }
+        window.requestAnimationFrame(scrollHandler);
     });
     });
 }
 }

@@ -167,7 +167,7 @@ orderHammer.on('tap', function(e) {
     }
     }
 });
 });
 
 
-$(window).scroll(function() {
+function scrollHandler() {
     if (order.end === false && $(window).scrollTop() + winH >
     if (order.end === false && $(window).scrollTop() + winH >
         $(document).height() - 0.25 * $orderContainer.height()) {
         $(document).height() - 0.25 * $orderContainer.height()) {
 
 
@@ -176,6 +176,10 @@ $(window).scroll(function() {
             noLoadingMask: true
             noLoadingMask: true
         });
         });
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
 
 
 //初始化请求第一页数据
 //初始化请求第一页数据

@@ -362,13 +362,17 @@ $listNav.on('touchend touchcancel', function(e) {
     }
     }
 });
 });
 
 
-$(window).scroll(function() {
+function scrollHandler() {
 
 
     //当scroll到1/4$goodsContainer高度后继续请求下一页数据
     //当scroll到1/4$goodsContainer高度后继续请求下一页数据
     if ($(window).scrollTop() + winH >
     if ($(window).scrollTop() + winH >
         $(document).height() - 0.25 * $goodsContainer.height()) {
         $(document).height() - 0.25 * $goodsContainer.height()) {
         search();
         search();
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
 
 
 if ($brandHeader.length > 0) {
 if ($brandHeader.length > 0) {

@@ -351,7 +351,7 @@ $listNav.on('touchend touchcancel', function(e) {
     e.stopPropagation();
     e.stopPropagation();
 });
 });
 
 
-$(window).scroll(function() {
+function scrollHandler() {
 
 
     //当scroll到1/4$goodsContainer高度后继续请求下一页数据
     //当scroll到1/4$goodsContainer高度后继续请求下一页数据
     if ($(window).scrollTop() + winH >
     if ($(window).scrollTop() + winH >
@@ -360,6 +360,10 @@ $(window).scroll(function() {
             search();
             search();
         }
         }
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
 
 
 //初始请求最新第一页数据
 //初始请求最新第一页数据

@@ -53,7 +53,8 @@ function hotrank(page, sort, tabId, notab) {
     });
     });
 }
 }
 
 
-$(window).scroll(function () {
+function scrollHandler() {
+
     if (page === 2) {
     if (page === 2) {
         return;
         return;
     }
     }
@@ -63,8 +64,12 @@ $(window).scroll(function () {
     page = 2;
     page = 2;
     notab = 1;
     notab = 1;
     hotrank(page, sort, id, notab);
     hotrank(page, sort, id, notab);
+}
 
 
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
+
 hotrank(page, sort, id, notab);
 hotrank(page, sort, id, notab);
 hotnav = new Hammer(document.getElementById('hotRank'));
 hotnav = new Hammer(document.getElementById('hotRank'));
 hotnav.on('tap', function (e) {
 hotnav.on('tap', function (e) {

@@ -359,7 +359,8 @@ $listNav.on('touchend touchcancel', function(e) {
     e.stopPropagation();
     e.stopPropagation();
 });
 });
 
 
-$(window).scroll(function() {
+
+function scrollHandler() {
 
 
     //当scroll到1/4$goodsContainer高度后继续请求下一页数据
     //当scroll到1/4$goodsContainer高度后继续请求下一页数据
     if ($(window).scrollTop() + winH >
     if ($(window).scrollTop() + winH >
@@ -368,6 +369,10 @@ $(window).scroll(function() {
             search();
             search();
         }
         }
     }
     }
+}
+
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
 });
 });
 
 
 //初始请求最新第一页数据
 //初始请求最新第一页数据