Angular: Empty Fiddle

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.1.js"></script>
<div ng-controller="MyCtrl">
  Heighest value is: {{result}}
</div>

JavaScript

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

function MyCtrl($scope) {
  $scope.friends = [
    {name:'John', age:25},
    {name:'Mary',  age:35},
    {name:'Mike', age:18},
    {name:'Adam', age:35},
    {name:'Julie', age:23}
  ];
    var arr = [];
    angular.forEach($scope.friends, function(item) {
      arr.push(item["age"]);
    });
    debugger;
    $scope.result = arr.sort().reverse()[0];
}