修改Bug不能下滑

@@ -18,7 +18,6 @@ var $ = require('jquery'),
     scH,
     $nav1 = $('#pos-nav'),
     $nav2 = $('#pos-list'),
-    $homePage = $('.discount-area'),
     sTop;
 
 var tip = require('../plugin/tip'),
@@ -111,15 +110,31 @@ if ($('.multi-browse').find('li').size() > 1) {
 }
 
 function getPageGoods(info) {
+    var nav,navType;
+
     if (searching) {
         return;
     }
+
+    navType = info.data.type;
+    nav = navInfo[navType];
+
+    //不需要重新加载并且数据请求结束
+    if (nav.end) {
+
+        return;
+    }
+
     searching = true;
     $.ajax({
         type: 'GET',
         url: info.url,
         data: info.data,
         success: function(data) {
+            if (data === ' ') {
+                nav.end = true;
+            }
+
             info.callBack(data);
         },
         error: function() {
@@ -661,11 +676,9 @@ function scrollHandler() {
 }
 
 //srcoll to load more
-if ($homePage.length > 0) {
-    $(window).scroll(function() {
-        window.requestAnimationFrame(scrollHandler);
-    });
-}
+$(window).scroll(function() {
+    window.requestAnimationFrame(scrollHandler);
+});
 
 
 //初始请求最新第一页数据