无法使用Knockout将observablecollection绑定到View

Question

我的视图模型是：

function MyInfo(data) {
        this.line = ko.observable(data);

    }
function MyViewModel() {
            var self = this;
            self.Plines = ko.observableArray([]);

            $.getJSON("URL",
            function (allData) {
                 var mappedData = $.map(allData, function (item) { return new MyInfo(item) });
            self.Plines = mappedData;
            });
            alert(self.Plines);

        }

        ko.applyBindings(new MyViewModel());

View只有Select。

<select data-bind="options: Plines,  optionsText: ''"></select>

我的JSON响应是：

["Item1","Item2","Item3","Item4","Item5"]

Answer 1

将self.Plines = allData;更改为self.Plines(allData);

另外，改变：

<select data-bind="options: Plines,  optionsText: ''"></select>

到

<select data-bind="options: Plines,  optionsText: 'line'"></select>

here's a working example