Question

我有与KnockoutJS集成的jQuery UI datepicker。

<input class="input-small hasDatepicker" data-bind="datepicker: ItemCurrentDate, datepickerOptions: { dateFormat: 'dd/mm/yy', changeMonth: true, changeYear: true, minDate: ItemStartDate(), maxDate: ItemEndDate(), datePickerPlaceholder: 'dd/mm/yy' } name="ItemCurrentDate" type="text" value="" placeholder="dd/mm/yy" id="dp12345">

我不得不添加minDate和maxDate限制。添加minDate限制后，它将当前值（ItemCurrentDate）设置为maxDate值，即使ItemCurrentDate＆gt; = ItemStartDate也是如此。当我打开dp时，我需要ItemStartDate保持不变。

Answer 1

并非完全遵循这个问题，但这会有效吗？这是一个小提琴。 http://jsfiddle.net/LkqTU/33447/我不能确定你的问题是否最小和最大日期是可以改变的可观测量。我认为它们是静态的，但如果不是，您可能需要更改自定义绑定的更新部分，可能会破坏日期选择器并使用新的最小和最大日期重新创建它。

您可以运行下面的解决方案，也可以使用上面提到的小提琴

＆＃13;

ko.bindingHandlers.datepicker = {
  init: function(element, valueAccessor, allBindingsAccessor) {

    var options = allBindingsAccessor().datePickeroptions || {};


    options.onSelect = function(selected, evnt) {
      var observable = valueAccessor();
      observable(selected);
    };



    $(element).datepicker(options);

    // setting initial value
    $(element).datepicker("setDate", valueAccessor()());


    //handle disposal (if KO removes by the template binding)
    ko.utils.domNodeDisposal.addDisposeCallback(element, function() {
      $(element).datepicker("destroy");
    });

  },
  //update the control when the view model changes
  update: function(element, valueAccessor, allBindingsAccessor) {
    var value = ko.utils.unwrapObservable(valueAccessor());
    $(element).datepicker("setDate", valueAccessor()());
  }
};



function model() {
  var self = this;
  this.itemCurrentDate = ko.observable(new Date(2017, 1, 26));
  this.itemStartDate = ko.observable(new Date(2017, 1, 1));
  this.itemEndDate = ko.observable(new Date(2017, 2, 22));
  this.resetDate = function() {
    self.itemCurrentDate(new Date(2017, 1, 26));
  }
}

var mymodel = new model();

$(document).ready(function() {
  ko.applyBindings(mymodel);

});

＆＃13;

<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/3.2.0/knockout-min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/jquery-ui.min.js"></script>
<link href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css" rel="stylesheet" />

<input data-bind="datepicker: itemCurrentDate,
datePickeroptions: {
  dateFormat: 'dd/mm/yy',
  changeMonth: true,
  changeYear: true,
  minDate: itemStartDate(),
  maxDate: itemEndDate(),
  datePickerPlaceholder: 'dd/mm/yy' 
  }
  " />
<p>
  theDate: <span data-bind="text: itemCurrentDate"></span>
</p>
<p>
  <input type="button" data-bind="click: resetDate" value="reset date" </p>

</p>

＆＃13;

jQuery UI datepicker的minDate选项重置当前值

1 个答案: