reader/pages/commodity/index.js

// pages/commodity/index.js
Page({

  /**
   * 页面的初始数据
   */
  data: {
    checkedId: '1'
  },
  onLoad(options) {

  },
  onShow() {

  },
  checked({
    currentTarget
  }) {
    console.log(currentTarget);
    this.setData({
      checkedId: currentTarget.dataset.id
    })
  }
})