Edit in JSFiddle

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

myApp.controller('MyCtrl', function ($scope, $timeout) {

    document.getElementById('btn').onclick = function (e) {
        $timeout(function () {
            $scope.name = "Button clicked";
        });
    }
});


//Recommendations:
/*

*/

<div ng-controller="MyCtrl">
    <button id="btn" type="button">Click me</button>
    <div>{{name}}</div>
</div>
<br/>