how to know which element is selected in angular js

I make multiple selected popover , in which user can select multiple values . I want to print the all selected value on screen or get a object in which all element which is selected by user .I will explain in other words .In my demo I have one button on screen .On button click I open a pop over which have multiple selected element I want to get all element which is selected by user in pop up please check my demo .here is my demo

http://codepen.io/anon/pen/KpaejV

angular.module('ionicApp', ['ionic'])
.controller('MyController', function($scope, $ionicPopover) {
  $scope.data =[
    {"name":"A"},
    {"name":"B"},
    {"name":"C"},
    {"name":"D"},
    {"name":"E"}
  ]
  $ionicPopover.fromTemplateUrl('my-popover.html', {
    scope: $scope
  }).then(function(popover) {
    $scope.popover = popover;
  });


  $scope.openPopover = function($event) {
    $scope.popover.show($event);
  };

   $scope.closePopover = function() {
    $scope.popover.hide();
  };
}
)

See updated code here : http://codepen.io/anon/pen/jPypNb

You need to add a "value" setting into your data JSON list and , on click, bind on each checkbox, bind the value to it.

Model Updated

  $scope.data =[
    {"name":"A", value:false},
    {"name":"B", value:false},
    {"name":"C", value:false},
    {"name":"D", value:false},
    {"name":"E", value:false}
  ]

HTML updated

<label class="checkbox">
       <input type="checkbox" ng-model="item.value">
     </label>
     {{item.name}}

You can change your model adding a property:

$scope.data =[
    {"name":"A", checked: false},
    {"name":"B", checked: false},
    {"name":"C", checked: false},
    {"name":"D", checked: false},
    {"name":"E", checked: false}
  ];

Your list will have the property attached to the element (ng-model):

<li class="item item-checkbox">
     <label class="checkbox">
       <input type="checkbox" ng-model="item.checked" ng-click="itemChecked(item)">
     </label>
     {{item.name}}
  </li>

and you can listen to the changes adding a method (itemChecked) passing your item:

$scope.itemChecked = function(item)
  {
    alert(item.name);  
  }

and this is your modified plunker.

if you want to limit the checks:

$scope.itemChecked = function(item)
{
    var count = 0;
    angular.forEach($scope.data, function(value, key) {
      count += value.checked ? 1 : 0; 
    });
    if (count > 3)
    {
        item.checked = false;
    }
  }