JavaScript is a client-side language. Hence, you have the ability to click one single button to submit relevant information that you have entered into a form. But what happens after you have clicked that tiny button?

The answer is simple! You need another language that owns the responsibility to store that information in a database and make it accessible later on. It is where NodeJS app development comes into the picture. Using NodeJS, developers can utilize the tools required to draw a connection between the file as well as the database and the data collected from the form that the user has stored.

What makes it much easier is if the developer is fully-fledged with JavaScript. If he is, then the NodeJS app becomes a piece of cake. Knowing some additional backend programming languages, including Python and Java, would also help.