Before we get building...

Before we get into building the blockchain, there are two crucial concepts that we need to familiarize ourselves with. These important concepts are as follows:

• The JavaScript constructor function
• The prototype object

An explanation of the JavaScript constructor function

Becoming familiar with the constructor function is important as we'll be using it to build our blockchain data structure. By now, you must be wondering what a constructor function is and what it actually does.

A constructor function is simply a function that creates an object class and allows you to easily create multiple instances of that particular class. What this actually means is that the constructor function allows you...