AngularJS angular.isFunction() Function

Last Updated : 06 Sep, 2022

The angular.isFunction() Function in AngularJS is used to determine if the parameter inside isFunction function is a function or not. It returns true if the reference is a function else false.

Syntax:

angular.isFunction(value);

Parameter:

value: This parameter specifies whether the passed value is a function or not.

Return Value: It returns true if the value passed is a function else false.

Example 1: This example describes the basic usage of angular.isFunction() Function in AngularJS.

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src= 
"//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"> 
    </script> 
    <title> angular.isFunction() </title> 
</head> 
  
<body ng-app="app" 
      style="text-align:center"> 
    <h1 style="color:green"> 
        GeeksforGeeks 
    </h1> 
    <h2>angular.isFunction()</h2> 
    <div ng-controller="geek"> 
        <b>Input1: </b> 
        <span> 
            <code> 
                obj = [{ name: "Abc"}, { name: "Xyz"}]; 
            </code> 
        </span><br>  
        <b>IsFunction: </b> {{isFunction1}}<br /> 
        <br><br>  
        <b>Input2: </b>  
        <code> 
            var Add = function () { 
                return null; 
            }; 
        </code><br> 
        <b>IsFunction:</b> {{isFunction2}} 
    </div> 
    <script> 
        var app = angular.module("app", []); 
        app.controller('geek', ['$scope', function($scope) { 
            var obj = [{ 
                name: "Abc" 
            }, { 
                name: "Xyz" 
            }]; 
            var Add = function() { 
                return null; 
            }; 
            $scope.isFunction1 = angular.isFunction(obj); 
            $scope.isFunction2 = angular.isFunction(Add); 
        }]); 
    </script> 
</body> 
</html>

Output:

isFunction

Example 2: This is another example that describes the usage of angular.isFunction() Function in AngularJS.

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src= 
"//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"> 
    </script> 
    <title> angular.isFunction() </title> 
</head> 
  
<body ng-app="app" 
      style="text-align:center"> 
    <h1 style="color:green"> 
        GeeksforGeeks 
    </h1> 
    <h2>angular.isFunction()</h2> 
    <div ng-controller="geek">  
        <b>Input1: </b>  
        <span> 
            <code> 
                var arr = ['DSA','Algorithms','Web tech']; 
            </code> 
        </span><br>  
        <b>IsFunction: </b> {{isFunction1}}<br /> 
        <br><br>  
        <b>Input2: </b>  
            <code> 
                Add = () =>{ return null; }; 
            </code><br>  
        <b>IsFunction:</b> {{isFunction2}} 
    </div> 
    <script> 
        var app = angular.module("app", []); 
        app.controller('geek', ['$scope', function($scope) { 
            var arr = ['DSA', 'Algorithms', 'Web tech']; 
            Add = () => { 
                return null; 
            }; 
            $scope.isFunction1 = angular.isFunction(arr); 
            $scope.isFunction2 = angular.isFunction(Add); 
        }]); 
    </script> 
</body> 
</html>