如何向對象里面添加元素，本例是向數組對象中加如元素，方法是一樣的。

該數組格式如下，數組里面是對象，對象里面有數組，看起來復雜，實際上並不難。

waitPayShow: [
   {
     orderid: 0,
     goods:[{
       goodid: 0,
       price: 10,
       number: 2
     },{
       goodid: 1,
       price: 10,
       number: 2
     }]
   },
   {
     orderid: 2,
     [{
       goodid: 2,
       price: 10,
       number: 2
     },{
       goodid: 3,
       price: 10,
       number: 2
     }]
    }
  ]

 /**
   * 顯示待付款頁面
   */
  waitPayShow: function () {
    //創建數組
    let array = []
    for (let i = 0; i < this.data.waitPayOrder.length; i++) {
      let sumPrice = 0
      let sumNumber = 0
      for (let j = 0; j < this.data.waitPayOrder[i].goods.length; j++) {
        let goodsPrice = parseFloat(this.data.waitPayOrder[i].goods[j].price)
        let goodsNumber = parseFloat(this.data.waitPayOrder[i].goods[j].number)
        sumPrice += goodsPrice * goodsNumber
        sumNumber += goodsNumber
      }
      //將計算好的內容加到數組對象中
      array.push(
        Object.assign({}, this.data.waitPayOrder[i], { totalNumber: sumNumber, totalPrice: sumPrice })
      )
    }
    this.setData({
      waitPayOrder: array
    })
  },

 

如果有大佬發現哪里不妥歡迎指正。qq:1534147975.