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    <p>Your <code>onSelectChange</code> method is based off of the values of the select box. Thus, when the value changes as a result of the data binding (such as when the items are first added to the list), it is correct for this event to fire. </p> <p>Instead of basing your change event off of the select box, it might be better to base your change event off of the data-bound properties.</p> <p>First, you could change your list to be an observable array.</p> <pre><code>list = ko.observableArray([{ name : "test-01", key : 1, visible: true}, { name : "test-02", key : 2 , visible: false}, { name : "test-03", key : 3 , visible: false}, { name : "test-04", key : 4 , visible: true} ]); selectedItem = ko.observable(); </code></pre> <p>In your markup: </p> <pre><code>&lt;select data-bind='options :list, optionsText: "name", value:selectedItem'&gt;&lt;/select&gt; </code></pre> <p>Now, whenever you want to determine if the item has changed, you can use the <code>ko.subscribe</code> function.</p> <pre><code>selectedItem.subscribe(function(newValue) { /* Do stuff when the value changes here */ }); </code></pre>
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    1. COThanks Patrick, is there any other way to get the selected value from a select box rather than assigning a value property? I can understand knockout binds the control whenever the value changes immediately. like other input controls text,button etc, the events will fires when the attached event handlers are called. if i remove value binding from the select box, then the change event will work whenever the user select a options from the select box, rather than initial stage. but the issue is how can i get the currently selected value?
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    2. COYou get or set the current option using the value binding. With my sample case, if, at any time you want to get the current selection for the select, you can simply say `selectedItem()`. This will return the currently selected object in the `option` binding. This page describes everything about using `<select>` elements with Knockout: http://knockoutjs.com/documentation/options-binding.html
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    3. COBasically, once you set up the data-bindings, you will only need to interact with the observables. Adding/removing elements to the select will require adding/removing elements from the observable array (your `list` variable). Getting/setting the selection of the select will be done through the `selectedItem` observable. Subscriptions to change events can be done using the `selectedItem` as well. That is all you should really need.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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