Arrays 从数组计算和

我有一个浮动数组

weeklyAmounts

，在子对象

a

中定义。在父对象

b

中，我有一个对象

a

数组，需要计算所有子对象

a

的week1小计，以及所有子对象

a

的week2小计，等等

我的问题是:

通过阅读敲除文档，可以跟踪事件（如删除或添加）上的可观察数组，但不跟踪单个对象的状态更改，因此在我的情况下，即使用户从GUI更改了

week1Amount

，它也不会触发计算值。这是真的吗

在GUI中更改

week1Amount

后，我没有看到viewmodel中的值发生了更改，这让我感到惊讶。我错过什么了吗

考虑到需要什么，最好的解决方案是什么

我的非工作代码如下：

function a(id, name, week1Amount, week2Amount, week3Amount, week4Amount,
week5Amount, week6Amount, week7Amount, week8Amount, week9Amount, week10Amount...) {
var self = this;
self.id = id;
self.name = name;
  self.week1Amount = ko.observable(week1Amount);
  self.week2Amount = ko.observable(week2Amount);
  self.week3Amount = ko.observable(week3Amount);
  self.week4Amount = ko.observable(week4Amount);
  self.week5Amount = ko.observable(week5Amount);
  self.week6Amount = ko.observable(week6Amount);
  self.week7Amount = ko.observable(week7Amount);
  self.week8Amount = ko.observable(week8Amount);
  self.week9Amount = ko.observable(week9Amount);
  self.week10Amount = ko.observable(week10Amount);
  self.week11Amount = ko.observable(week11Amount);
  self.week12Amount = ko.observable(week12Amount);
    };


    function b(bid, bname, as) {
    var self = this;
  self.id= bid;
  self.name = bname;
  self.as = as;
  self.week1Sum = ko.computed(function () {
      var sum = 0.0;
      $(self.as).each(function (index, aItem) {
        sum += aItem.week1Amount();
      });
      return sum;
  });
    //rest of code is omitted for brevity. 
    };

      var objBs = [];

      $(objAs).each(function (index, aItem) {
        var newA = new a(aItem.ID, aItem.Name,  
    aItem.WeeklyAmount[0],aItem.WeeklyAmount[1],aItem.WeeklyAmount[2],aItem.WeeklyAmount[3],
    aItem.WeeklyAmount[4],aItem.WeeklyAmount[5],aItem.WeeklyAmount[6],....);
    objBs.push(newA);
    });

var vmB = new b(1,"someName", objBs);

    ko.applyBindings(vmB, document.getElementById("showBs"));

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您从未使用函数b？b是视图模型。我修改了密码。谢谢，你从哪里得到objA？