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POGetting "Cannot read property 'nodeType' of null" when calling ko.applyBindings
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  1. POGetting "Cannot read property 'nodeType' of null" when calling ko.applyBindings
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    copied!<p>I have this knockout code:</p> <pre><code>function Task(data) { this.title = ko.observable(data.title); this.isDone = ko.observable(data.isDone); } function TaskListViewModel() { // Data var self = this; self.tasks = ko.observableArray([]); self.newTaskText = ko.observable(); self.incompleteTasks = ko.computed(function() { return ko.utils.arrayFilter(self.tasks(), function(task) { return !task.isDone() }); }); // Operations self.addTask = function() { self.tasks.push(new Task({ title: this.newTaskText() })); self.newTaskText(""); }; self.removeTask = function(task) { self.tasks.remove(task) }; } ko.applyBindings(new TaskListViewModel()); </code></pre> <p>This html:</p> <pre class="lang-html prettyprint-override"><code>&lt;head&gt; &lt;script type="text/javascript" src="jquery-1.7.1.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="knockout-2.0.0.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="script.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;h3&gt;Tasks&lt;/h3&gt; &lt;form data-bind="submit: addTask"&gt; Add task: &lt;input data-bind="value: newTaskText" placeholder="What needs to be done?" /&gt; &lt;button type="submit"&gt;Add&lt;/button&gt; &lt;/form&gt; &lt;ul data-bind="foreach: tasks, visible: tasks().length &gt; 0"&gt; &lt;li&gt; &lt;input type="checkbox" data-bind="checked: isDone" /&gt; &lt;input data-bind="value: title, disable: isDone" /&gt; &lt;a href="#" data-bind="click: $parent.removeTask"&gt;Delete&lt;/a&gt; &lt;/li&gt; &lt;/ul&gt; You have &lt;b data-bind="text: incompleteTasks().length"&gt;&amp;nbsp;&lt;/b&gt; incomplete task(s) &lt;span data-bind="visible: incompleteTasks().length == 0"&gt; - it's beer time!&lt;/span&gt; &lt;/body&gt; </code></pre> <p>The example is the same as the one found on the Knockout website, but when I run it, it returns this message on Chrome Fire Bug:</p> <blockquote> <p>Uncaught TypeError: Cannot read property 'nodeType' of null</p> </blockquote> <p>This one is related to the knockout file and to this line of my script:</p> <pre><code>ko.applyBindings(new TaskListViewModel()); </code></pre> <p>And this error is pointing to this line (1766) on knockout:</p> <pre><code>var isElement = (nodeVerified.nodeType == 1); </code></pre> <p>What am I doing wrong?</p>
 

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