是否可以遍历映射的可观察数组并订阅? [英] Is it possible to iterate through mapped observable array and subscribe?

问题描述

我正在使用敲除映射插件将服务器中的对象集合映射到可观察的数组.我希望能够订阅那些映射对象的一些属性上的一些更改事件.谁能指出我做错了什么?

I'm using the knockout mapping plugin to map a collection of objects from the server to an observable array. I'd like to be able to subscribe to some change events on a few properties on those mapped objects. Can anyone point out what I'm doing wrong?

        $.getJSON(apiUrl, function (data) {

            ko.mapping.fromJS(data, {}, self.ReportTemplates);

            for (var i = 0; i < self.ReportTemplates().length; i++) {

                var reportTemplate = self.ReportTemplates()[i];

                //try to subscriber here?
                reportTemplate.VideoId.subscribe = function (a) {
                    alert(a);
                };
            }
        });

推荐答案

您使用的subscribe错误.您应该调用它并传递您的处理程序，即

You're using subscribe wrong. You should be calling it and passing in your handler, i.e.

reportTemplate.VideoId.subscribe(function (a) {
    alert(a);
});

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