Question

我在淘汰赛中有一个Observable数组，里面有数组，每个数组中都有一个称为“时间”的项目。我将如何在可观察数组中对数组进行排序，以便根据项的值从低到高的顺序排列。值采用小时：分钟：第二格式。

function viewModel() {
  var self = this;
  
  self.myObservable = ko.observableArray([
  {time: "01:00:00", name: 'frank'},
  {time: "05:30:00", name: 'bob'},
  {time: "03:00:00", name: 'bill'},
  {time: "00:00:21", name: 'john'},
  {time: "00:12:00", name: 'paul'}
  ])
}

Answer 1

您应该使用sort()函数。

    self.myObservable.sort(function (left, right) {
        return left.age === right.age ? 0
             : left.age < right.age ? -1
             : 1;
    });

Answer 2

淘汰赛的Income有built-in methods，其工作方式与Array.prototype类似。您可以使用sort

localeCompare

observableArray

function viewModel() {
  var self = this;

  self.myObservable = ko.observableArray([
      { time: "01:00:00", name: 'frank' },
      { time: "05:30:00", name: 'bob' },
      { time: "03:00:00", name: 'bill' },
      { time: "00:00:21", name: 'john' },
      { time: "00:12:00", name: 'paul' }
    ]);

  self.sort = function() {
    self.myObservable.sort((a, b) => a.time.localeCompare(b.time))
  }
}

ko.applyBindings(new viewModel)

如何基于每个数组内的某个项目对可观察数组进行排序

2 个答案: