abstract：// pages/goods/details.jsconst app = getApp();var com = require("../../utils/util.js");Page({ /** * 页面的初始数据 */ data: { goodList : {}, &
// pages/goods/details.js
const app = getApp();
var com = require("../../utils/util.js");
Page({
/**
* 页面的初始数据
*/
data: {
goodList : {},
goods : false,
checkAll : false,
totalCount: '0',
totalPrice: '0.00'
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (e) {
},
/**
* 显示页面，执行一次
*/
onShow: function () {
if (app.globalData.userInfo) {
com.post('Api/Home/car_list', { uid: app.globalData.userInfo.uid}, "setContent", this);
} else {
wx.switchTab({
url: '../my/index'
})
}
},
setContent : function(e){
var car_list = e.list;
if (!car_list){
return {};
}
for (var j = 0; j < car_list.length; ++j) {
car_list[j].checked = false;
}
this.setData({
goodList: car_list,
goods : true
});
},
/**
* 用户选择购物车商品
*/
checkboxChange: function (e) {
var checkboxItems = this.data.goodList;
var values = e.detail.value;
for (var i = 0; i < checkboxItems.length; ++i) {
checkboxItems[i].checked = false;
for (var j = 0; j < values.length; ++j) {
if (checkboxItems[i].id == values[j]) {
checkboxItems[i].checked = true;
break;
}
}
}
var checkAll = false;
if (checkboxItems.length == values.length) {
checkAll = true;
}
this.setData({
'goodList': checkboxItems,
'checkAll': checkAll
});
this.calculateTotal();
},
/**
* 计算商品总数
*/
calculateTotal: function () {
var goodList = this.data.goodList;
var totalCount = 0;
var totalPrice = 0;
for (var i = 0; i < goodList.length; i++) {
var good = goodList[i];
if (good.checked) {
totalCount += good.count;
totalPrice += good.count * good.shop.price;
}
}
totalPrice = totalPrice.toFixed(2);
this.setData({
'totalCount': totalCount,
'totalPrice': totalPrice
})
},
/**
* 用户点击商品减1
*/
subtracttap: function (e) {
var index = e.target.dataset.index;
var goodList = this.data.goodList;
var count = goodList[index].count;
if (count <= 1) {
return;
} else {
goodList[index].count--;
this.setData({
'goodList': goodList
});
this.calculateTotal();
}
com.post('Api/Home/car_count', { id: goodList[index].id, count: goodList[index].count }, "setCount", this);
},
/**
* 用户点击商品加1
*/
addtap: function (e) {
var index = e.target.dataset.index;
var goodList = this.data.goodList;
var count = goodList[index].count;
goodList[index].count++;
this.setData({
'goodList': goodList
});
this.calculateTotal();
com.post('Api/Home/car_count', { id : goodList[index].id,count: goodList[index].count }, "setCount", this);
},
/**
* 用户点击全选
*/
selectalltap: function (e) {
var value = e.detail.value;
var checkAll = false;
if (value && value[0]) {
checkAll = true;
}
var goodList = this.data.goodList;
for (var i = 0; i < goodList.length; i++) {
goodList[i]['checked'] = checkAll;
}
this.setData({
'checkAll': checkAll,
'goodList': goodList
});
this.calculateTotal();
},
/**
* 更新商品数量
*/
setCount: function () {
},
/**
* 下单页面
*/
goOrder: function () {
var shop_id = '';
var goodList = this.data.goodList;
for (var i = 0; i < goodList.length; i++) {
if (goodList[i].checked == true){
shop_id = shop_id + ',' + goodList[i].id;
}
}
if (!shop_id){
return {};
}
wx.navigateTo({
url: "order?id=" + shop_id,
})
},
/**
* 跳转到商品分类
*/
goShop : function(){
wx.switchTab({
url: '../goods/index'
})
}
})
Correcting teacher：韦小宝Correction time：2018-12-14 17:11:48
Teacher's summary：写的很不错哦！开发小程序要记得没事的时候多看看开发文档哦！
