AngularJS Example:

HTML

<link rel="stylesheet" href="http://twitter.github.com/bootstrap/assets/css/bootstrap.css">
<div ng-app>
    <div ng-controller="ColorCtrl">
        <select ng-model="color" ng-options="c.text for c in colors" required>
            <option value="">-- choose color --</option>
        </select>
    </div>
</div>

JavaScript

function ColorCtrl($scope) {
    $scope.colors = [{
        text: 'black'
    }, {
        text: 'white'
    }, {
        text: 'red'
    }, {
        text: 'blue'
    }, {
        text: 'yellow'
    }];
}