The 8 Types of Data in JavaScript

By | Computer programming, Programming language

Programmer applies JavaScript and allows it to run to apply data for a new computer application.

Before we can discuss the different types of data in JavaScript, it’s crucial to understand what exactly data is in these computer programs. A data type is responsible for sending messages to the compiler or programmer on how the program intends to use the data. Data can be numeric, alphanumeric, or decimal and can be featured in other forms. Any type of data can be implemented in variables when installing JavaScript. Let’s discuss the eight different types of data in JavaScript to learn more about their operations within an application. 


The number type of data represents both integer and floating-point numbers. An integer could be n=123 and a floating-point number could be n=12.345. There are many operations for these numbers to be generated, including the most common—addition, subtraction, multiplication, and division. Besides integers and decimal-based numbers, JavaScript is also enabled to read “special numeric values” which belongs to a more specific data type, Infinity, and NaN. 


BigInt is a built-in data type that provides an efficient way to represent whole numbers larger than 253-1, which is the largest number that JavaScript can successfully represent with the number primitive. BigInt is predominantly used for documenting and interpreting arbitrarily large numbers. With this being said, BigInt numbers are rarely needed. This data type is currently available and supported in Firefox, Chrome, and Edge. 


This data type is a sequence composed of string or of connected characters that often make up words. Although, string-type data is equipped to create a string with any type of character or syntax, there are some characters that are exceptional. If you need to include a double quote, a tab, or a carriage return in a string, JavaScript has “escape codes” to allow you to implement those. For double and single quotes, these are “simple” quotes, which is what you see more often in string data. 

Boolean (Logical type)

The Boolean data type is broken up only into two values: true and false. This is intended to store “yes” and “no” values by using “true” for “yes” and “false” for “no”, making it easier for the computer application to read commands. Boolean values can also respond to numerical values and equations, such as 4 > 1, which would be false. “On” and “off” can also be interpreted for “true” and “false” for special commands. 

The “Null” Value

The “null” data type does not belong or correlate with any other data type in JavaScript. Null does not refer to any other value or a non-existing object. Simply put, it a special value that represents “nothing”, “empty”, “or value unknown”. For example, the command “let age = null” would determine the age as an “unknown” value. 

The “Undefined” Value 

Much like the “null” value, the “undefined” value makes its own category. Undefined in JavaScript refers to “value is not assigned”. If a variable is declared, but not assigned, then its value is undefined. For example:

Let age;

Alert(age); // shows “undefined”

“Undefined” results out the fact that the age was not assigned a numerical value nor a “null” value. “Undefined” is predominantly used for a default value when things are unassigned. 

Objects and Symbols

Objects and symbols are the most recent primitive type introduced in JavaScript. This type of data is considered a counterpart to types such as Number, Strong, and Boolean. Symbols can be created using “(“ and “)”. This, in turn, creates unique identifiers whenever objects need to be interpreted. Objects are used to store collections of data and other complex entities if need be. 

“Typeof” Operator

The Typeof operator in JavaScript coincides with String data type. It returns a string indicating the type of the unevaluated operand, which is an expression representing the object or primitive whose type is to be returned. The typeof operator is what allows an application to determine a data type, including all of the types we have discussed. For any other type that was not pre-installed, it will identify the data as “object”. 

Optimize Your Application With Marble Computer 

The professionals at Marble Computer offer migrations, conversions, and development so that your systems offer you with highly responsive actions and software. Contact us to learn more about how we can implement the necessary maintenance to your application, today.

Common Issues IT Technicians Face When Migrating Computer Mainframes

By | Computer programming, Programming language

New computer languages in the process of being implemented into a system application.

There comes a time when businesses have to face the finite lifecycles of their current mission-critical applications. When this time comes, business personnel will find it obligatory to upgrade or replace their existing hardware/software by migrating its key functionalities to a new computing platform. Without a doubt, migrating mainframes can be overwhelming if you don’t familiarize yourself with the challenges that potentially lie ahead. We discuss some of the most common issues professionals and businesses face when conducting software migration projects. 

First and Foremost, Transferring and Migrating Data 

One major issue that commonly arises when migrating mainframes is the need to migrate data as well. If your current system has been in heavy use for years on end, the chances are that it has accumulated large quantities of data in the form of files, records, and other pieces. When migrating from mainframes, it is important to think about how this data will be migrated to a new system with no faults or roadblocks that could impede the process. If you do plan to create a method of transferring data for a successful migration, it could be helpful to consider the following questions:

  • What predominant formats are the files?
  • What is the size of the data and how are they categorized?
  • Which data needs to be migrated and which can be left out?

Planning ahead for data migration can make the process much easier and smooth regarding when it comes to operating your business. 

The Costly Aftermath of Integrating Your Systems 

Oftentimes, business personnel misperceive the final execution of integrated systems to be the biggest challenge in migration, but that’s not necessarily the case. If migration doesn’t go as planned, integration can be as costly as developing the new system. System integration involves all the tasks that must be completed before the new mainframe replaces your existing software. This extends to migrating the data, teaching your business team how to maneuver the new system, establishing tech support, and deactivating the new system. All of these tasks are not only time-consuming but they can also place a dent in your finances if you’re not meticulous the first time around.

Learning the Languages and Processing Engines  

With a new computing platform often comes a new coding language to learn. This can be labor-intensive and require expertise that the IT team who assist may not have or be able to spare. This can summon the following application complexities. 

  • A lack of detailed knowledge and understanding of the application’s code, how it works, and its purpose. 
  • If your mainframe applications share a parent data store, your new system may require an entirely new application code to ensure that your mainframe database and new platform databases operate in sync. 

Overall, these complexities can impede performance time, and cost investments without utilizing the proper expertise and IT advising when it comes to familiarizing yourself with a new coding language. 

Increased Risk of Internal Migration Failures 

The process of migrating applications from a legacy mainframe carries a number of risks that must be properly handled in order to gain the best out of your new system. IT technicians and businesses usually come into contact with the following:

  • Unauthorized cutover and testing phase challenges that require additional mainframe migration. 
  • Poor project planning and lack of clear tools and equipment for the potential migration to new phases of the application. 
  • Draining the knowledge of the mainframe, and not being able to spare the modification history. 

Mainframe specialists can help with the development of an application-specific migration plan and uncover certain needs in order to attain successful migration of mainframe applications. 

Maintaining Business Production with Down Systems

Lastly and most importantly, one of the most common issues that businesses have to come into contact with is being able to sustain their daily operations without being reliant on their computer mainframe systems. There is plenty that could go wrong during the migration of mainframes; as such, IT technicians have to take their time and work diligently to ensure proper execution of an application. It could be helpful and effective to deploy a new mainframe when it will be less disruptive for your business and customers. If there isn’t an optimal time during the day, it is important that you strategize accordingly while your new system is being migrated. 

Choose The Professionals at Marble Computer For Successful Mainframe Execution  

At Marble Computer, we are comprised of experienced professionals who are knowledgeable in migrating your current systems to new and updated mainframes.  Our Control/DCD software can be of extreme value when migrating applications to new computing platforms. Contact us today to learn more about how we can assist throughout the process of migration.

A Brief Timeline of Computer Programming and Its Possible Future

By | Computer programming, Programming language

Computer programmer analyzes and compares two different computer programming languages.

These days, it seems like everyone is talking about computer programming, language, and coding. It almost seems as if the hype surrounding programming was an overnight kind of thing, but that’s not the case at all. Now more than ever, there has been a surplus of programs, classes, and tutorials designed to help aspiring coders. We’re here to go over how computer programming came to be and how it plays an integral role in our lives and for the future.

The History of Programming

1883—the Algorithm for the Analytical Engine

This algorithm was created by Ada Lovelace for Charles Babbage’s Analytical Engine to compute Bernoulli numbers. Not only is Lovelace considered the world’s first-ever computer programmer but the programming language ”Ada” is named after her honor.

1949— Assembly Language

Assembly language is any low-level programming language in which there is a very strong correspondence between the instructions in the language and the architecture’s machine code instructions. In simpler terms, it simplifies the language in the machine code and the instruction that dictates the action of the computer. It was first widely used in the Electronic Delay Storage Automatic Calculator.

1959— The Creation of COBOL

Created by Navy Admiral Grace Murry Hopper as a computer programming language that could run on all brands and types of computers, COBOL stands for Common Business Oriented Language. This language is commonly used in ATMs, credit card processing, telephone systems, hospital and government computers, automotive systems, and traffic signals.

1972—The Creation of C

Developed by Dennis Ritchie at Bell Labs, C is considered by many to be the first high-level language. A high-level computer programming language is closer to human language and more removed from the machine code. C was created with the intent that operating systems could be used on a wide spectrum of computers. It has influenced the creation of many other languages including Ruby, Java, JavaScript, Perl, PHP, and Python.

The Introduction of SQL

SQL was developed by Donald D. Chamberlin and Raymond F. Boyce at IBM. SQL stands for Structured Query Language. It is used for viewing and changing information that is stored in databases. SQL utilizes command sentences called queries to add, remove, or view data.

2003— Concise and High-Level Language of Scala

Scala was created by Martin Odersky. Scala is a computer programming language that combines functional programming, which is mathematical, with object-oriented programming, which is organized around data that controls access to its code. Its compatibility with Java makes it helpful in Android development.

2009— The Go Programming Language

Go is a programming language designed by Google to address problems that may occur in large software systems. Since computer and technology use is much different today as opposed to when languages such as C++, Java, and Python were predominantly used, problems arose when large computer systems become more prevalent in business and working settings. Go is intended to improve the working environment for programmers so that they could write, read, and maintain large software systems more efficiently.

2014—Swift: Apple Developer

Swift is a computer programming language developed by Apple as a replacement for C, C++, and Objective-C. Swift is supposed to be more efficient to use and allows less for mistakes. It is versatile and is used for desktop apps, mobile apps, and cloud services.

Anticipated Changes for Programming

New technologies running on revolutionary new programs are constantly being produced and marketed to citizens across the globe, which also means that programmers always have something new to learn. Programmers predict that new voice-activated applications will take the lead in computer programming. New and updated voice-activated applications can enable consumers to gain information and interact more, virtually, through a website, and in many other ways.

Mobile development is also predicted to be demanded in terms of computer programming. Web technology is growing at a rapid rate. Consumers are more interested in online shopping, research, and more, which calls for online automation. These are huge changes that are going to continue as they tend to make the everyday tasks of consumers and business personnel much easier.

Learn More About the Intricacies of Programming with Marble Computer

Marble Computer is comprised of a team of professional and experienced coders and programmers. We retain all the knowledge customers might need when discovering the endless capabilities of computer language and programs. Contact us today to learn more about what goes into computer programming and how it can make a difference in your work life and more.