changeItemInArray: function() {
    // you can use this way to modify a danamic data path
    this.setData({
      'array[0].text':'changed data'
    })
  },
  changeItemInObject: function(){
    this.setData({
      'object.text': 'changed data'
    });
  },

this.setData({
      'array[0].text':'changed data'
    })

var price = 'goods['+index+'].price'
 this.setData({
      [price]:'changed data'
    })

toggle: function (e) {
    // console.log(e)
    var index = e.target.id;
    let showConObj = 'catalog['+index+'].showCon';
    console.log(showConObj);
    this.setData({
      [showConObj]: !this.data.catalog[index].showCon
    })
  }