Functional programming: Combining map with concatAll

combining-map-with-concatAll.js

function() {
	var movieLists = [
			{
				name: "New Releases",
				videos: [
					{
						"id": 70111470,
						"title": "Die Hard",
						"boxart": "http://cdn-0.nflximg.com/images/2891/DieHard.jpg",
						"uri": "http://api.netflix.com/catalog/titles/movies/70111470",
						"rating": 4.0,
						"bookmark": []
					},
					{
						"id": 654356453,
						"title": "Bad Boys",
						"boxart": "http://cdn-0.nflximg.com/images/2891/BadBoys.jpg",
						"uri": "http://api.netflix.com/catalog/titles/movies/70111470",
						"rating": 5.0,
						"bookmark": [{ id:432534, time:65876586 }]
					}
				]
			},
			{
				name: "Dramas",
				videos: [
					{
						"id": 65432445,
						"title": "The Chamber",
						"boxart": "http://cdn-0.nflximg.com/images/2891/TheChamber.jpg",
						"uri": "http://api.netflix.com/catalog/titles/movies/70111470",
						"rating": 4.0,
						"bookmark": []
					},
					{
						"id": 675465,
						"title": "Fracture",
						"boxart": "http://cdn-0.nflximg.com/images/2891/Fracture.jpg",
						"uri": "http://api.netflix.com/catalog/titles/movies/70111470",
						"rating": 5.0,
						"bookmark": [{ id:432534, time:65876586 }]
					}
				]
			}
		];

  
	return movieLists.map(function(movie) {
    return movie.videos.map(function(video) {
     return video.id 
    }) 
  }).concatAll();

}