Describe about The $timeout service.

The $timeout Service

The $timeout service is AngularJS' version of the window.setTimeout function.

Example

Display a new message after two seconds:
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope, $timeout) {
    $scope.myHeader = "Hello World!";
    $timeout(function () {
        $scope.myHeader = "How are you today?";
    }, 2000);
});