<div ng-app="myApp" ng-controller="myCtrl">

                First Name: <input type="text" ng-model="firstName"><br>
                Last Name: <input type="text" ng-model="lastName"><br>
                Full Name:<input ng-bind="firstName+" "+lastName>

                    <script>
      var app = angular.module('myApp', []);
      app.controller('myCtrl', function($scope) {
      $scope.firstName = "John";
      $scope.lastName = "Doe";
      });
       </script>