Incorporating native JavaScript classes within an Angular application

Question

Incorporating native JavaScript classes within an Angular application

I have created a custom JavaScript class:

var ExampleClass = new function(elements) {

        this.elements = elements;

        this.someFunction() {
            // logic involving this.elements
        };

    };

How can I incorporate it into an Angular application? For instance, if I want to use it within a controller:

.controller('ExampleController', ['ExampleClass',
    function (ExampleClass) {

        var elements = [
            {id: 1, label: 'foo'},
            {id: 2, label: 'bar'}
        ];

        $scope.exampleInstance = new ExampleClass(elements);

    }])

What is the correct way to register my ExampleClass? Are there multiple options available?

Moreover, is it considered problematic to utilize native JavaScript classes in an Angular application without fully integrating them into the framework?

javascript class angularjs instance

Answer 1

Answer №1

Incorporating a factory pattern in your code can be beneficial

    .factory('Holder', function() {
        return (function (){
            this.foo = foo;
            this.bar = bar;
        });
    });

To implement it, follow these steps:

.controller('AnyController', ['Holder', function (Holder) {
    var holder = new Holder();
}]);

Note: It is recommended to use a factory instead of a service, based on the suggestions provided in the comments

Answer 2

Incorporating a factory pattern in your code can be beneficial

    .factory('Holder', function() {
        return (function (){
            this.foo = foo;
            this.bar = bar;
        });
    });

To implement it, follow these steps:

.controller('AnyController', ['Holder', function (Holder) {
    var holder = new Holder();
}]);

Note: It is recommended to use a factory instead of a service, based on the suggestions provided in the comments

Answer 3

Answer №2

From what I comprehend, a factory in this context acts as a unique entity that has the ability to produce a class capable of generating instances. Essentially, the factory can provide either a direct link to the constructor or a wrapped function around it to initialize objects without using the new keyword:

.factory('Holder', function() {
  function Holder(elements) {
    this.elements = elements; 
  }
  Holder.prototype.get = function() {
    return this.elements;
  };
  return function(elements) {
    return new Holder(elements);
  };
})

.controller('Main', function($scope, Holder) {
  var elements = [
    {id: 1, label: 'foo'},
    {id: 2, label: 'bar'}
  ];
  $scope.elements = Holder(elements).get();
});

Answer 4

From what I comprehend, a factory in this context acts as a unique entity that has the ability to produce a class capable of generating instances. Essentially, the factory can provide either a direct link to the constructor or a wrapped function around it to initialize objects without using the new keyword:

.factory('Holder', function() {
  function Holder(elements) {
    this.elements = elements; 
  }
  Holder.prototype.get = function() {
    return this.elements;
  };
  return function(elements) {
    return new Holder(elements);
  };
})

.controller('Main', function($scope, Holder) {
  var elements = [
    {id: 1, label: 'foo'},
    {id: 2, label: 'bar'}
  ];
  $scope.elements = Holder(elements).get();
});

Incorporating native JavaScript classes within an Angular application

Answer №1

Answer №2

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