(PCC)[ANGULARJS] How to use AngularJS angular.isString()

Programming Code Center(PCC)
[ANGULARJS]

(PCC)::[How-to-use-AngularJS-angular.isString()]::[angularjs]

File Name : index.html

<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>

<div ng-app="myApp" ng-controller="myCtrl">
<p>{{ x1 }}</p>
<p>{{ x2 }}</p>
</div>

<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
    $scope.x1 = "JOHN";
    $scope.x2 = angular.isString($scope.x1);
});
</script>

</body>
</html>

Output :

{{ x1 }}

{{ x2 }}