JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://ajax.microsoft.com/ajax/jquery.validate/1.7/jquery.validate.js"></script>
<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.4/themes/ui-lightness/jquery-ui.css">

JavaScript

var date = "8/9/2010";

var result = date.split('/');

for( var i = 2; i--; ) {
    result[i] = ("0" + result[i]).slice(-2);
}

result = result.reverse().join('');

alert(result);