fix YH-5062

@@ -31,7 +31,7 @@ const _timeFormat = (tick) => {
 function _productAddFlag(productList) {
     let now = Date.now();
 
-    productList.sort((a, b) => a.orderBy < b.orderBy);
+    productList.sort((a, b) => -(a.orderBy - b.orderBy));
     productList.forEach(product => {
         if (now < product.startTime * 1000) { // 未开抢
             product.wait = true;
@@ -97,7 +97,7 @@ const index = (req, res, next) => {
             });
         }
 
-        result.activitys = resultActivity.data.secKillProductVoList.sort((a, b) => a.startTime > b.startTime);
+        result.activitys = resultActivity.data.secKillProductVoList.sort((a, b) => a.startTime - b.startTime); // orderBy startTime ASC
         let nowTime = Date.parse(new Date());
 
         result.activitys.forEach((activity, i) => {