fix bug : all coupons add prd_limit

new add prd_limit display undefined

@@ -191,13 +191,15 @@
                     <div class="col-sm-4">
                         <div class="col-sm-10">
                             <select id="useRange" class="form-control input-form" value="[[useRange]]">
+                                <option value="">请选择</option>
                                 [[if couponType!=6]]
                                 <option value="0">分类</option>                                
                                 [[/if]]
-                                [[if couponType==1||couponType==3]]
+                                <option value="2">店铺</option>
+                                [[if couponType > 0]]
                                 <option value="3">商品</option>                                
                                 [[/if]]
-                                <option value="2">店铺</option>
+
                             </select>&emsp;&emsp;
 
                             [[if useRange==1]]
@@ -206,7 +208,7 @@
                             [[if useRange==3]]
                             <a class="btn btn-primary btn-xs" href="javascript:;" id="importPrds">导入商品</a>
                             [[/if]]
-                            [[if useRange==2||couponType==6]]
+                            [[if useRange==2]]
                             <a class="btn btn-primary btn-xs" href="javascript:;" id="addShop">添加店铺</a>
                             [[/if]]
                             [[if useRange==0&&couponType!=6]]
@@ -241,7 +243,7 @@
                     </div>
                 </div>
                 [[/if ]]
-                [[if couponType !=1 && couponType!=3]]
+                [[if couponType !=1 && couponType!=3 && useRange!=3 ]]
                 <div class="form-group">
                     <label class="col-sm-2 control-label">SKN除外</label>
                     <div class="col-sm-4">

@@ -33,7 +33,11 @@ var _import = function(el, type) {
                     response.data.successList.forEach(function(o,i){
                         import_skns.push(o.productSkn);
                     });
-                    var productLimit = window.ViewModel.productLimit + "," + import_skns.join(",");
+                    var productLimit = '';
+                    if(window.ViewModel.productLimit){
+                        productLimit += window.ViewModel.productLimit + ",";
+                    }
+                    productLimit += import_skns.join(",");
                     $("textarea[name=\"productLimit\"]").val(productLimit);
                 }
             }else{