knockout.js - 淘汰财产日期选择器不工作

Question

我正在尝试按照以下示例将日期选择器绑定到我的模板属性中：http: //jsfiddle.net/H8xWY/130/

从提琴手看起来很简单，但问题是当我专注于日期文本框时，日期选择器根本不会出现。也没有控制台错误。不知道为什么什么都没有发生以及我错过了什么？

我的模型：

var MyViewModel = function(model) {
    var self = this;

    self.date = ko.observable(new Date());
}

我的模板：

<div id="my-form">
            <input data-bind="datepicker: date, datepickerOptions: { minDate: new Date() }" />

</div>
<script src="models/my-model.js" type="text/javascript"></script>
<script type="text/javascript">
    var target = document.getElementById("my-form");
    var data = @Html.Raw(Json.Encode(Model));
    var myViewModel = new MyViewModel(data);
    ko.applyBindings(myViewModel, target);
</script>

Answer 1

添加日期选择器的淘汰赛扩展

ko.bindingHandlers.datepicker = {
        init: function (element, valueAccessor, allBindingsAccessor) {
            //initialize datepicker with some optional options
            var options = allBindingsAccessor().datepickerOptions || {};
            $(element).datepicker(options);

            //handle the field changing
            ko.utils.registerEventHandler(element, "change", function () {
                var observable = valueAccessor();
                observable($(element).datepicker("getDate"));
            });

            //handle disposal (if KO removes by the template binding)
            ko.utils.domNodeDisposal.addDisposeCallback(element, function () {
                $(element).datepicker("destroy");
            });

        },
        update: function (element, valueAccessor) {
            var value = ko.utils.unwrapObservable(valueAccessor());

            //handle date data coming via json from Microsoft
            if (String(value).indexOf('/Date(') == 0) {
                value = new Date(parseInt(value.replace(/\/Date\((.*?)\)\//gi, "$1")));
            }

            current = $(element).datepicker("getDate");

            if (value - current !== 0) {
                $(element).datepicker("setDate", value);
            }
        }
    };