daliangzao/customized/pages/made/car/car.js

// customized/pages/made/car/car.js
let app = getApp();
let host = app.globalData.servsers; // 请求的url
Page({

  /**
   * 页面的初始数据
   */
  data: {
    carList:[],// 购物车列表数组
    host: app.globalData.servsers,
    amount:0, //总价
    checkAll:false, // 全选
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {

  },

  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {

  },

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    let that = this;
    that.getCarlist(that)
    
  },

  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {

  },

  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {

  },

  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {

  },

  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {

  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {

  },
  subtraction(e){ // 减少
  let that = this;
    console.log(e)
    let index = e.target.dataset.index,carList = that.data.carList;
    if (carList[index].customGoodsNum > 1){
      // 表示最小数量，不可减少
      carList[index].customGoodsNum--;
      that.setData({
        carList: carList
      })
    }
    that.totalPrice(that)
  },
  add(e) { // 减少
    let that = this;
    console.log(e)
    let index = e.target.dataset.index, carList = that.data.carList;
      carList[index].customGoodsNum++;
      that.setData({
        carList: carList
      })
    that.totalPrice(that)
  },
  checkboxChange(e){
    let index = e.target.dataset.index, that = this, carList = that.data.carList;
    if (e.detail.value[0]){ // 表示价格增加
      that.data.carList[index].checked = true; // 表示选中
    } else {
      that.data.carList[index].checked = false; // 表示选中
    }
    that.setData({
      carList: carList
    })
    that.totalPrice(that)

  },
  getCarlist(that){
    wx.request({
      url: host +'/queryShopCar',
      method:'post',
      header: {
        'content-type': 'application/x-www-form-urlencoded'
      },
      data:{
        userId: 'oovpNwjlsY6xx8ceCebFa1dOLd9E'  //app.globalData.user_id,
      },
      success:function(res){
        console.log('购物车列表数据',res)
        let carList = [],imgArray=[];
        res.data.forEach((el,index)=>{
          imgArray =el.customGoodsImg.split(',');
          carList.push(el);
          carList[index]['imgArray'] = imgArray;
          carList[index]['checked'] = false;
        })
        that.setData({
          carList: carList
        })
        console.log(that.data.carList,"carListcarList")
      }
    })
  },
  totalPrice(that){
    let amount = 0,checkAll = true;
    that.data.carList.forEach(res=>{
      if(res.checked){
        amount += res.customgoodsPriceNow * res.customGoodsNum
      }
      if (!res.checked) {
        checkAll = false
      }
    })
    that.setData({
      amount:amount.toFixed(2),
      checkAll: checkAll
    })
  }
})