What sets apart these two JavaScript namespaces?

Question

What sets apart these two JavaScript namespaces?

My main goal is to expertly organize my javascript code by eliminating any global elements. I came across two namespace declaration methods in this informative post, and now I'm looking for your input on the advantages and disadvantages of each.

    var namespace1 = new function () {
        var internalFunction = function () {
        };

        this.publicFunction = function () {
        };
    };

    var namespace2 = {
        publicFunction: function () {
        }
    };

In addition, can anyone advise me on how to create a private function within the 'namespace2' method?

javascript

Answer 1

Answer №1

When deciding how to structure your object, consider the complexity of it. In most cases, the simpler approach is cleaner and less bloated. Take a look at this concise object declaration:

var namespace = {
    f1: function () {
        // Do thing 1
    },
    f2: function () {
        // Do thing 2
    }
};

This straightforward method may not allow for private functions since only functions can create scope, not object literals. However, if you prefer all methods to be "public", you can indicate that certain ones are for internal use by prefixing their names with an _. This makes it easier to unit test functions meant to be kept "private".

On the other hand, using a function to initialize the namespace provides more control over public/private access and when the "namespace" is initialized. The example given initializes it immediately with new, but you could also wait until DOM ready or after some AJAX operation has finished.

Answer 2

When deciding how to structure your object, consider the complexity of it. In most cases, the simpler approach is cleaner and less bloated. Take a look at this concise object declaration:

var namespace = {
    f1: function () {
        // Do thing 1
    },
    f2: function () {
        // Do thing 2
    }
};

This straightforward method may not allow for private functions since only functions can create scope, not object literals. However, if you prefer all methods to be "public", you can indicate that certain ones are for internal use by prefixing their names with an _. This makes it easier to unit test functions meant to be kept "private".

On the other hand, using a function to initialize the namespace provides more control over public/private access and when the "namespace" is initialized. The example given initializes it immediately with new, but you could also wait until DOM ready or after some AJAX operation has finished.

Answer 3

Answer №2

If you want to enhance encapsulation, consider encapsulating it within a closure and specifying its visibility explicitly.

module = (function(){
  function private_method() {
    //..
  }

  function publicMethod1() {
    private_method(); // able to access here
  }

  return {
    exportedPublicMethod1: publicMethod1
  };
})();

module.exportedPublicMethod1();

Answer 4

If you want to enhance encapsulation, consider encapsulating it within a closure and specifying its visibility explicitly.

module = (function(){
  function private_method() {
    //..
  }

  function publicMethod1() {
    private_method(); // able to access here
  }

  return {
    exportedPublicMethod1: publicMethod1
  };
})();

module.exportedPublicMethod1();

Answer 5

Answer №3

Confidential method within Namespace2.

Showcase private method using Revelation Pattern.

var Namespace2;

(function() {

    function confidentialMethod() {
    }

    Namespace2 = {
       showcaseMethod : confidentialMethod
    };

}());

Namespace2.showcaseMethod();

Answer 6

Confidential method within Namespace2.

Showcase private method using Revelation Pattern.

var Namespace2;

(function() {

    function confidentialMethod() {
    }

    Namespace2 = {
       showcaseMethod : confidentialMethod
    };

}());

Namespace2.showcaseMethod();

Answer 7

Answer №4

If you're looking to enhance your understanding of JavaScript closures, I highly recommend diving into them. Though they may take some time to grasp, they offer the ability to create private members within your code. Check out this article by Douglas Crockford for a straightforward explanation, as well as another one by the Mozilla team. In my own coding practices, I leverage closures and expose specific methods through namespaces. This approach has proven effective in maintaining clean and organized code structures.

Answer 8

If you're looking to enhance your understanding of JavaScript closures, I highly recommend diving into them. Though they may take some time to grasp, they offer the ability to create private members within your code. Check out this article by Douglas Crockford for a straightforward explanation, as well as another one by the Mozilla team. In my own coding practices, I leverage closures and expose specific methods through namespaces. This approach has proven effective in maintaining clean and organized code structures.

What sets apart these two JavaScript namespaces?

Answer №1

Answer №2

Answer №3

Answer №4

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