Fork underscore.js
by Raynos
HTML
<script src="http://documentcloud.github.com/underscore/underscore.js"></script>
JavaScript
var f = _.compose(_.uniq, function(array) {
return _.sortBy(array, _.identity);
});
var myData = ['237', '124', '255', '124', '366', '255'];
var sortedUnique = f(myData);
console.log(sortedUnique);