title: Javascript/Angular returning array after shuffle
body: <p>I am creating a simple shuffle/unshuffle function in an Angular app I'm building. The idea is there is a single button, on click it will either clone the array, shuffle the array, then return a shuffled order of the array, or if the array has already been shuffled, it will return the clone of the original array so that the user can revert back to the original order.</p>
  
  <p>The issue I am having is I cannot figure out how to return the original order clone back to the view.  </p>
  
  <p>Here is a Fiddle: <a href="http://jsfiddle.net/nf6j1qvz/" rel="nofollow">http://jsfiddle.net/nf6j1qvz/</a> </p>
  
  <p>Here is some function code:</p>
  
  <pre><code>$scope.shuffleThis = function(array) {
      if(!$scope.isShuffled){
          $scope.isShuffled = true;
          $scope.unshuffled = array.slice(0);
          var m = array.length, t, i;
          // While there remain elements to shuffle
          while (m) {
              // Pick a remaining element…
              i = Math.floor(Math.random() * m--);
              // And swap it with the current element.
              t = array[m];
              array[m] = array[i];
              array[i] = t;
          }
          return array;
      }else{
          console.log('unshuffling');
          $scope.isShuffled = false;
          array = $scope.unshuffled;
          return array;
      }
  }
  </code></pre>