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POradio button checked binding html5, durandal
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copied!<p>even that I see very many similar questions in this site, no one of them <strong>answer</strong> to my question. So pleas, don't be angry with me that I discuss this subject again. I work in durandal project, I have html pages with javascript files behind. I have two radio button in one of the pages. I want their "checked" attribute to be binding to a variable in the view-model behind. It is looked simple... but it is not! I try two ways, any one of them didn't succeed:</p> <p><strong>first-way:</strong> in the html:</p> <pre><code> <input type="radio" name="radSearchBy" id="byNo" data-bind:"checked:isId" /> in javascript: isId: ko.observable(true) </code></pre> <p><strong>second-way:</strong> in the html:</p> <pre><code> in javascript: isId: ko.observable("checked") </code></pre> <p>I know what is the problem. even if I simply write </p> <pre><code> <input type="radio" name="radSearchBy" id="byNo" data-bind:"checked:true" /> </code></pre> <p><strong>or:</strong> </p> <pre><code> <input type="radio" name="radSearchBy" id="byNo" checked="checked" /> </code></pre> <p>it doesn't work. only whem I write:</p> <pre><code> <input type="radio" name="radSearchBy" id="byNo" **checked** /> </code></pre> <p><strong>yes, the "checked" word without anything follow- it works well.</strong></p> <p><strong>but it is problem, becouse how can I do it *<em>binding</strong>?</em>*</p> <p>please help me as quick as you can.</p>

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