Initial Impression

Share This Post

We have been discussing variables, constants and data types. I wanted to take a moment to speak about initialization of data. Each language might do this a touch differently, but they all have a way to initialize data.

So what is initialization? It simply means putting content into your variable or constant. In JavaScript, it is done like this…

[code lang=”js”]
var testVar = "I am initialized!";

If you do not initialize your variables, you could end up receiving undefined errors within your program. So if you use a variable that you do not initialize, take care to test it prior to using it.

JavaScript constants always need to be initialized when they are created.

So what does an uninitialized variable look like?

[code lang=”js”]
var testVar;

That’s it.

A good practice would be to initialize all of your variables at least with a default value. For example, say I am writing a program where I am collecting someone’s age. I could initialize it as follows…

[code lang=”js”]
var myAge = 0;

I start it off with a zero (0) because I know that know one is going to say they are zero years old, unless we have some sort of prebirth genius that can use computers from the womb and that is just weird. So, now I can test the variable in my code. I can check to see if the value of it is zero (0). If it is, then the end user has not told me how old they are…maybe they are ashamed?

Happy Coding!


More To Explore


Demystifying Scrum User Stories Confirmation: Ensuring Quality and Collaboration

One of the key elements of Scrum is the use of user stories to define the requirements of a system or feature from the perspective of the end user. As teams work through the product backlog, it becomes crucial to confirm the user stories to ensure they meet the desired criteria and are ready for development. In this blog post, we’ll explore the concept of Scrum user stories confirmation and its significance in delivering high-quality products.


The Power of Conversations in Scrum User Stories

At the heart of Scrum lies the concept of user stories, which serve as a means of capturing requirements from the perspective of end-users. However, the true power of user stories lies not just in their written form but also in the conversations that take place around them. In this blog post, we will explore the significance of conversations in Scrum user stories and how they contribute to the success of Agile projects.

Do You Want To Boost Your Business?

drop us a line and keep in touch

Scroll to Top

Need help?

Let's have a chat...


Jump Back In!

Here at Webolution Designs, we love to learn. This includes sharing things we have learned with you. 


Begin Your Learning Journey Today!

Come back inside to continue your learning journey.