How to include elements of an array in another array?

Question

So for example I have a MAIN array with all the information I need:

  $scope.songs = [
    { title: 'Reggae',  url:"#/app/mworkouts", id: 1 },
    { title: 'Chill',   url:"#/app/browse",    id: 2 },
    { title: 'Dubstep', url:"#/app/search",    id: 3 },
    { title: 'Indie',   url:"#/app/search",    id: 4 },
    { title: 'Rap',     url:"#/app/mworkouts", id: 5 },
    { title: 'Cowbell', url:"#/app/mworkouts", id: 6 }
  ];

I want to put only certain objects into another array without typing in each of the objects so the end result will look like

  $scope.array1 = [
    { title: 'Reggae', url:"#/app/mworkouts",id: 1 },
    { title: 'Cowbell', url:"#/app/mworkouts",id: 6 }
  ];

I have tried this with no luck:

  $scope.array1 = [
    { $scope.songs[1] },
    { $scope.songs[6] }
  ];

I will have to do a bunch of these so typing in each object would take forever, is there any faster way to do this? Thanks in advance :)

Awesome! It's hard not knowing the correct syntax...thanks again! — MehdiN
– MehdiN, Commented Oct 19, 2016 at 18:59

Praveen Kumar Purushothaman · Accepted Answer · 2016-10-19 18:49:19Z

2

You need to do something like this:

$scope.array1 = $scope.songs.filter(function (song) {
  return (song.title == "Reggae" || song.title == "Cowbell");
});

Here, the filter function will give you a filtered new array to be replaced for the original scope value.

Or in simple way, using the array indices, you can use:

$scope.array1 = [ $scope.songs[0] , $scope.songs[5] ];

answered Oct 19, 2016 at 18:49

Praveen Kumar Purushothaman

167k27 gold badges215 silver badges261 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

MehdiN Over a year ago

Keeping things simple and sexy, is there a way I could change some information in the object but keep all the other information the same? For Example, change just the id:1 to id:45 while still keeping title and url the same.

Praveen Kumar Purushothaman Over a year ago

@MehdiN Yes, you can do it.. Just add song.id += 44; before the return statement. LoL. Might have undesirable effects.

Pranav C Balan · Accepted Answer · 2016-10-19 18:51:53Z

1

You need to remove the braces since it's already an object. Although the array index starts from 0 so change index value based on 0.

$scope.array1 = [ 
   $scope.songs[0] ,
   $scope.songs[5] 
];

edited Oct 19, 2016 at 18:51

answered Oct 19, 2016 at 18:48

Pranav C Balan

115k25 gold badges172 silver badges195 bronze badges

Collectives™ on Stack Overflow

How to include elements of an array in another array?

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related