AngularJS Tutorial（15）from w3school


API stands for Application Programming
Interface.

AngularJS Global API

The AngularJS Global API is a set of global JavaScript functions for performing common tasks like:

Comparing objects
Iterating objects
Converting data

The Global API functions are accessed using the angular object.

Below is a list of some common API functions:

API	Description
angular.lowercase()	Converts a string to lowercase
angular.uppercase()	Converts a string to uppercase
angular.isString()	Returns true if the reference is a string
angular.isNumber()	Returns true if the reference is a number

angular.lowercase()

Example

<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";

$scope.x2 = angular.lowercase($scope.x1);

});

</script>

Try it Yourself »

angular.uppercase()

Example

<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";

$scope.x2 = angular.uppercase($scope.x1);

});

</script>

Try it Yourself »

angular.isString()

Example

<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>

Try it Yourself »

angular.isNumber()

Example

<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";

$scope.x2 = angular.isNumber($scope.x1);

});

</script>

Try it Yourself »