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AngularJS Basic Tutorial

AngularJS API

API stands for AApplication PProgramming IApplication Programming Interface (API).

AngularJS global API

AngularJS global API is a collection of JavaScript functions for performing common tasks, such as:

  • Compare objects

  • Iterate over an object

  • Convert an object

Global API functions are accessed using the angular object.

The following lists some common API functions:

APIDescription
angular.lowercase (<angular1.7)
angular.$$lowercase() (angular1.7+)		Convert a string to lowercase
angular.uppercase() (<angular1.7)
angular.$$uppercase() (angular1.7+)		Convert a string to uppercase
angular.isString()Determine if the given object is a string, and return true if it is.
angular.isNumber()Determine if the given object is a number, and return true if it is.

Note:Since AngularJS 1.7 After removing angular.lowercase and angular.uppercase methods, replace them with angular.$$lowercase and angular.$$uppercase

angular.lowercase()

Online Example

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/angular.js/1.7.0/angular.min.js"></script>
</head>
<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　= "w3codebox";
　　　　$scope.x2　angular.$$lowercase($scope.x1);
});
</script>
</body>
</html>
Test and See ‹/›

angular.uppercase()

Online Example

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/angular.js/1.7.0/angular.min.js"></script>
</head>
<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　= "w3codebox";
　　　　$scope.x2　angular.$$uppercase($scope.x1);
});
</script>
</body>
</html>
Test and See ‹/›

angular.isString()

Online Example

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/angular.js/1.7.0/angular.min.js"></script>
</head>
<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　= "w3codebox";
　　　　$scope.x2　= angular.isString($scope.x1);
});
</script>
</body>
</html>
Test and See ‹/›

angular.isNumber()

Online Example

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.staticfile.org/angular.js/1.7.0/angular.min.js"></script>
</head>
<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　= "w3codebox";
　　　　$scope.x2　= angular.isNumber($scope.x1);
});
</script>
</body>
</html>
Test and See ‹/›
AngularJS Reference Manual