AngularJS Live Example

HTML

<script src="http://underscorejs.org/underscore-min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.7/angular.min.js"></script>
<div ng-controller = "fessCntrl"> 
  
    <pre>{{selects|json}}</pre>
    
    <pre>{{teams|json}}</pre>
  
</div>

JavaScript

var app = angular.module('myModule', []);

app.controller('fessCntrl', function ($scope, $timeout) {
    
    $scope.selects = [];
    
  var teams = [
    {
      "team_id": "VitmPDYU0Chvi0nz",
      "team_label_id": "VjX2FjYU0CxFi0Vt",
      "team_parent_id": "",
      "team_title": "Meeter Team",
      "team_description": "",
      "team_members_total": 4,
      "is_team_master": true
    },
    {
      "team_id": "VjdqMw9nJpQO1juJ",
      "team_label_id": "VjdqMw9nJpQO1juI",
      "team_parent_id": "",
      "team_title": "R&D",
      "team_description": "",
      "team_members_total": 7,
      "is_team_master": false
    },
    {
      "team_id": "VjtBPg9nJv4q1jr3",
      "team_label_id": "VjtBPg9nJv4q1jr2",
      "team_parent_id": "VjdqMw9nJpQO1juJ",
      "team_title": "Web",
      "team_description": "",
      "team_members_total": 2,
      "is_team_master": false
    },
    {
      "team_id": "VjtBSQ9nJjwm1jtT",
      "team_label_id": "VjtBSQ9nJjwm1jtS",
      "team_parent_id": "VjdqMw9nJpQO1juJ",
      "team_title": "Server",
      "team_description": "",
      "team_members_total": 1,
      "is_team_master": false
    },
    {
      "team_id": "VjtCqA9nJu0Z1jvx",
      "team_label_id": "VjtCqA9nJu0Z1jvw",
      "team_parent_id": "VjtBPg9nJv4q1jr3",
      "team_title": "tiny team",
      "team_description": "",
      "team_members_total": 0,
      "is_team_master": false
    },
      {
      "team_id": "VjtCqA9nJu0Z1jvx",
      "team_label_id": "VjtddCqA9nJu0Z1jvw",
      "team_parent_id": "VjtBPg9nJv4q1jr3",
      "team_title": "tiny team 2",
      "team_description": "",
      "team_members_total": 0,
      "is_team_master": false
    },
      {
      "team_id": "VjtCqA9ndfJu0Z1jvx",
      "team_label_id": "VjtddCqA9nJu0Z1jvw",
      "team_parent_id": "VjtCqA9nJu0Z1jvx",
      "team_title": "xxx",
      "team_description": "",
      "team_members_total": 0,
      "is_team_master": false
    }
  ];
    
    var rebuild_teams =  _.map(teams,...