app/pointExchange/pages/detail/detail.js

// pointExchange/pages/detail/detail.js
var util = require("../../../utils/util.js")
const app = getApp();

Page({
  /**
   * 页面的初始数据
   */
  data: {
		appAssetsUrl:app.appAssetsUrl,
		bottomLeft: app.bottomLeft,
		options:{},
		detail:{},
		isApply: false
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
		this.setData({
			options,
			isApply:!!options.isApply
		})
		this.loadData();
  },
	loadData: function() {
		let _this = this;
		wx.showLoading({
			title: '努力加载中...',
		})
		app._post_form('product/info', "", _this.data.options, function(res) {
			if (res.code === 0) {
				_this.setData({
					detail: res.data
				})
			}
		})
	},

  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {

  },

  /**
   * 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 () {

  },
	/**
	 * 生命周期函数--监听页面初次渲染完成
	 */
	onReady: function() {
	  //获得popup组件
	  this.popup = this.selectComponent("#popup");
		this.popup2 = this.selectComponent("#popup2");
		this.popup3 = this.selectComponent("#popup3");
	},
	showPopup(e) {
	  this[e.currentTarget.dataset.name].showPopup();
	},
	//取消事件
	_error(e) {
	  this[e.currentTarget.dataset.name].hidePopup();
	},
	//卡券兑换商品
	useCoupon(e) {
	  this._error(e);
		let that = this;
		wx.showLoading({
			title: '提交中...',
		})
		app._post_form('product/exchange', "", {
			pId: that.data.detail.id,
			stuId: util.getUserId()
		}, function(res) {
			if (res.code === 0) {
				that.popup2.hidePopup();
			}
		})
	},
	toPointExchangeByMe(){
		wx.navigateTo({
			url:'/pointExchange/pages/my/my'
		})
	},
})