选择

pages/shopping/shopping.js

@@ -8,13 +8,15 @@ Page({
     data: {
         list:[],
         select:[],
-        userid:0
+        userid:0,
+        price:"0.00"
     },
     sel(a){
         console.log(a)
         this.setData({
             [`select[${a.detail.index}]`]:!a.detail.select
         })
+        this.num();
     },
 
     /**
@@ -98,8 +100,52 @@ Page({
 
     },
     num(){
+        let num = 0;
+        let sel = 0;
         for(let i in this.data.select){
+            console.log(i)
+            if(this.data.select[i]){
+             num += parseFloat(this.data.list[i].goods_price)*100
+             sel++
+            }
+        }
+        if(sel == this.data.list.length){
+            this.setData({
+                all:true
+            })
+        }else{
+            this.setData({
+                all:false
+            })
+        }
+        this.setData({
+            price:num/100
+        })
+    },
+    call(){
+        let sel = 0;
+        let select = []
+        for(let i in this.data.list){
+            console.log(i)
+            if(this.data.select[i]){
+            //  num += parseFloat(this.data.list[i].goods_price)*100
+             sel++
+            }else{
+                select[i] = true
+            }
+        }
+        if(sel == this.data.list.length){
+            this.setData({
+                all:false,
+                select:[]
+            })
+        }else{
+            this.setData({
+                all:true,
+                select
+            })
+        }
+        this.num()
 
     }
-    }
 })

pages/shopping/shopping.wxml

@@ -13,9 +13,9 @@
    </view> -->
    <view class="bottom">
       <view class="left">
-         <view class="select"></view>
-         <text class="selectall">全选</text>
-         <text class="pri">$0.00</text>
+         <view bind:tap="call" class="select {{all ? 'selects':''}}"></view>
+         <text bind:tap="call" class="selectall">全选</text>
+         <text class="pri">${{price}}</text>
       </view>
       <view class="right">
          <text class="del">删除</text>

pages/shopping/shopping.wxss

@@ -33,19 +33,22 @@
   margin-left: 46rpx;
   margin-right: 24rpx;
 }
+.selects{
+    background-color: #4cc97d;
+}
 
 .pri {
-        color: #E0C79D;
+  color: #e0c79d;
   font-size: 26rpx;
   margin-left: 19rpx;
 }
 
 .right {
-        color: #BBBBBB;
+  color: #bbbbbb;
   margin-right: 31rpx;
 }
 
 .sub {
   margin-left: 30rpx;
-        color: #4CC97D;
+  color: #4cc97d;
 }