Selected HTML option not working with Jquery after 1.5 version

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For the HTML <select id="routetype" name="routetype">

<option value="fastest">Fastest</option> <option selected="true" value="balanced">Balanced</option> <option value="quietest">Quietest</option>

</select>

when the jquery statement written below is executed, the default value is not shown on screen, however in the DOM it is set correctly.

$("#routetype > [value='quietest']").attr("selected", "true");

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​http://jsfiddle.net/x3UyB/4/

See this jfiddle for reference. Select the onLoad option to see the result.

[timmywil]

Duplicate of #13245.