JavaScript Private Variables

Variables are important in any programming language and JavaScript is not exempted. In an application (online or local), developers have to provide variables so that the function provide a different interpretation on certain commands.

Without variables, customization in experience is more likely impossible. For that reason, developers try to create smart variables in their application so that their functions will provide the expected results fast. The variables in JavaScript are treated in the same manner developers implement variables in other programming language.

Of course, there is the difference of providing the right code. The difference in codes provides a different interpretation and JavaScript is a great example of this difference.

Variables can come in various formats. A variable can be private, privileged or public. By default a variable is set in public since it should be interpreted by any function. Privileged methods on the other hand are often dedicated to a single function.

Like privileged method, private method can be implemented in the single function but can be used across the base functions. The private function allows developers to secure their application since the variable is not spilled in other functions.

But working with private variables in JavaScript is often challenging. The reason for this trouble is very simple: while JavaScript is popular with its integration with object oriented functions, JavaScript is not OO in itself. This creates the confusion with private variables since its implementation is not simply as public variable but as an object.

The traditional implementation of private variable will not work well with JavaScript. Private variables are simply attached in the main function. No special functions are added as most programming languages can understand the private variable intended in the function. Because JavaScript is an exemption, developers have to find a way to easily implement private variables.

The answer to the challenges posed by private variables in JavaScript is on proper stringing of functions. In gist, JavaScript developers simply have to be more specific on how to use private variable. For example, simply using this function:

Function ()
// implement private variable
var (function)

Developers have to widen the functions scope before implementing the variable. The scope should be added in the first function. This will tell the JavaScript engine that the function has specific variables that should be implemented in limited lines.

function ()//add scope of the function
//implement private variable
var (function)

Of course the challenge to private variables in JavaScript using this technique is the additional line for the function. Since the function will be limited, it should be assumed that the rest of the functions will be implemented in separate lines. This means the developers will have to sacrifice the scope of the function just to implement the private variable.

Developers have to weigh the importance of the variable since the function might not work well in the application. On the other hand, the ability to implement public variable is still a good option if the developers can assure the security of the codes.