Angular: Empty Fiddle

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.1.js"></script>
<div ng-controller="MyCtrl">
    <!-- this can be an image if you want -->
    <p ng-show="loading">...LOADING...</p>
    
    <!-- Showing the status -->
    <p ng-hide="loading">{{status}}</p>
    <button type="button" ng-click="upload()">Do $http request</button>
</div>

JavaScript

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

function MyCtrl($scope, $timeout) {
    $scope.status = 'Not started';
    $scope.loading = false;
    
    $scope.upload = function() {
        $scope.loading = true;
        // Simulating a http request with a timeout
        $timeout(function(){ 
            $scope.status = "Finished";
            $scope.loading = false;
        },3000);
    }
}