0

我有一个浮点数组weeklyAmounts，在子对象中定义a。在父对象b中，我有一个对象数组a，需要从所有子对象计算第 1 周的小计，从所有子对象计算第2 周的小a计a等。

我的问题：

  1. 通过阅读淘汰文档，可观察到的数组会跟踪诸如删除或添加之类的事件，但不会跟踪单个对象的状态更改，因此在我的情况下，即使用户week1Amount从 GUI 更改，它也不会触发计算值。真的吗？
  2. 令我惊讶的是，week1Amount从 GUI 更改后，我没有看到 viewmodel 中的值发生变化。我在这里错过了什么吗？
  3. 鉴于需要什么，最好的解决方案是什么？

我不工作的代码如下：

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"));
4

0 回答 0