AngularJSのdateフィルターで日本語の曜日を表示するサンプル

{{ today | date: 'EEE' }} または {{day}}

<body ng-controller="Ctrl">
<p>{{ today | date: 'EEE' }} または {{day}}</p>
<script>
angular.module('myApp', []).controller('Ctrl', ['$scope', function ($scope) {
  var now = new Date();
  var day = now.getDay();
  var week = ['日','月','火','水','木','金','土'];
  $scope.today = now;
  $scope.day = week[day];
}]);
</script>
<body>