From fb252e1284f486e864fca5e08caeabfd4a236d22 Mon Sep 17 00:00:00 2001
From: Ge Hao <althoughghgh@gmail.com>
Date: Tue, 15 Nov 2016 18:16:50 +0800
Subject: [PATCH] =?UTF-8?q?=E4=B8=8D=E6=94=AF=E6=8C=81=E7=9A=84=E6=96=B9?=
 =?UTF-8?q?=E6=B3=95=E9=87=8D=E5=86=99?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 pages/category/category.js         | 12 +++++++-----
 pages/show_product/show_product.js |  2 +-
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/pages/category/category.js b/pages/category/category.js
index 802fc6c..d8eaf98 100644
--- a/pages/category/category.js
+++ b/pages/category/category.js
@@ -32,13 +32,15 @@ Page({
   bindTapProduct: function(e) {
     var that = this
     var cartItems = wx.getStorageSync('cartItems') || []
-    var thisItem  = this.data.items.find(function(ele){
+    var thisItem  = this.data.items.filter(function(ele){
       return ele.id === e.currentTarget.dataset.id
-    })
+    })[0]
 
-    var exist = cartItems.find(function(ele){
-      return ele.id === thisItem.id
-    })
+    if (thisItem) {
+      var exist = cartItems.filter(function(ele){
+        return ele.id === thisItem.id
+      })[0]
+    }
 
     if (exist) {
       exist.quantity = parseInt(exist.quantity) + 1
diff --git a/pages/show_product/show_product.js b/pages/show_product/show_product.js
index 34dd5c2..e99561a 100644
--- a/pages/show_product/show_product.js
+++ b/pages/show_product/show_product.js
@@ -11,7 +11,7 @@ Page({
   onLoad (params) {
     var allProducts = wx.getStorageSync('products')
     var id = params.id
-    var product = wx.getStorageSync('products').filter(function(i){
+    var product = allProducts.filter(function(i){
       return i.id === id
     })[0]