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POChild JSON object undefined when its not
 

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    <p>I have an array of JSON objects in the page source that all work except a child object (category).</p> <p>Here is the code in cshtml:</p> <pre><code> &lt;script type="text/javascript"&gt; var initialData = @Html.Raw(Json.Encode(ViewBag.OfferItems)); &lt;/script&gt; </code></pre> <p>Here is the resulting page source:</p> <pre><code> &lt;script type="text/javascript"&gt; var initialData = [{"Id":1,"Name":"Item1","ProductVariantLinks":[{"category":{"Id":2,"Name":"Basic Pizza","Products":null},"product":{"Id":1,"Name":"Margherita","Description":null,"ProductVariants":null},"productVariant":{"Id":1,"Name":"10 inch"}},{"category":{"Id":2,"Name":"Basic Pizza","Products":null},"product":{"Id":2,"Name":"Zeno","Description":null,"ProductVariants":null},"productVariant":{"Id":4,"Name":"8 inch"}}]},{"Id":2,"Name":"Item2","ProductVariantLinks":[]}]; &lt;/script&gt; </code></pre> <p>As far as I can tell category is there and contains properties, but it appears as undefined in IE's debugger.</p> <p><img src="https://i.stack.imgur.com/bmiRU.png" alt="IE Debugger showing category undefined"></p> <p>Is there something I'm missing?</p> <p>P.S. the JSON is valid.</p> <p><strong>Update</strong></p> <p>I'm using knockoutjs and category is in inialdata until it does ko.applybindings. I'm not sure why it would do this, code below:</p> <pre><code>/// &lt;reference path="jquery-1.5.1.js" /&gt; /// &lt;reference path="knockout-2.0.0.js" /&gt; var ProductVariantLink = function() { var self = this; self.category = ko.observable(); self.product = ko.observable(); self.productVariant = ko.observable(); // Whenever the category changes, reset the product selection self.category.subscribe(function() { self.product(undefined); self.productVariant(undefined); }); }; var OfferItem = function() { var self = this; self.Name = new String(); self.ProductVariants = new Array(); }; var SpecialOfferItemModel = function (specialOfferItems) { var self = this; self.specialOfferItems = ko.observableArray(ko.utils.arrayMap(specialOfferItems, function (specialOfferItem) { return { Id: specialOfferItem.Id, Name: specialOfferItem.Name, ProductVariants: ko.observableArray(specialOfferItem.ProductVariantLinks) }; })); self.addSpecialOfferItem = function () { self.specialOfferItems.push({ Id: "", Name: "", ProductVariants: ko.observableArray() }); }; self.removeSpecialOfferItem = function (specialOfferItem) { self.specialOfferItems.remove(specialOfferItem); }; self.addProductVariant = function (specialOfferItem) { specialOfferItem.ProductVariants.push(new ProductVariantLink()); }; self.removeProductVariant = function (ProductVariant) { $.each(self.specialOfferItems(), function () { this.ProductVariants.remove(ProductVariant) }) }; self.save = function () { var OfferItems = new Array(); $.each(self.specialOfferItems(), function () { var item = this; var offer = new OfferItem(); offer.Name = item.Name; $.each(item.ProductVariants(), function () { offer.ProductVariants.push(this.ProductVariant); }); OfferItems.push(offer); }); self.lastSavedJson(JSON.stringify(ko.toJS(self.specialOfferItems()), null, 2)); return false; }; self.lastSavedJson = ko.observable(""); }; var model = new SpecialOfferItemModel(initialData); ko.applyBindings(model); $(function () { $('#myForm').submit(function () { model.save(); }); }); &lt;table class="specialOfferItemsEditor"&gt; &lt;tr&gt; &lt;th&gt; &lt;/th&gt; &lt;th&gt; Name &lt;/th&gt; &lt;th&gt; ProductVariants &lt;/th&gt; &lt;/tr&gt; &lt;tbody data-bind="foreach: specialOfferItems"&gt; &lt;tr&gt; &lt;td&gt; &lt;div&gt; &lt;a href="#" data-bind="click: $root.removeSpecialOfferItem"&gt;Delete&lt;/a&gt;&lt;/div&gt; &lt;/td&gt; &lt;td&gt; &lt;input data-bind="value: Name" /&gt; &lt;/td&gt; &lt;td&gt; &lt;table&gt; &lt;tr&gt; &lt;th&gt; Category &lt;/th&gt; &lt;th&gt; Product &lt;/th&gt; &lt;th&gt; ProductVariant &lt;/th&gt; &lt;/tr&gt; &lt;tbody data-bind="foreach: ProductVariants"&gt; &lt;tr&gt; &lt;td&gt; &lt;select data-bind='options: ProductCategories, optionsText: "Name", optionsCaption: "Select...", value: category, uniqueName: true'&gt; &lt;/select&gt; &lt;/td&gt; &lt;td data-bind="with: category"&gt; &lt;select data-bind='options: Products, optionsText: "Name", optionsCaption: "Select...", value: $parent.product, uniqueName: true' &gt; &lt;/select&gt; &lt;/td&gt; &lt;td data-bind="with: product"&gt; &lt;select data-bind='options: ProductVariants, optionsText: "Name", optionsCaption: "Select...", value: $parent.ProductVariant, uniqueName: true' &gt; &lt;/select&gt; &lt;/td&gt; &lt;td&gt; &lt;a href='#' data-bind='click: $root.removeProductVariant'&gt;Delete&lt;/a&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; &lt;a href='#' data-bind='click: $root.addProductVariant'&gt;Add Product Variant&lt;/a&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt; &lt;/table&gt; </code></pre>
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    1. COHave you tried hard-coding var initialData the JSON string you've provided instead of pulling it from ViewBag.OfferItems?
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    2. COWhat does the actual resulting page source look like? The one that you pasted can't come from the source code that you pasted, as it is missing a semicolon at the end...
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    3. COIt does have a semicolon, it does got lost somehow when I was editing my post.
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