Variables
Variables are the first building block you will be introduced to when learning most languages. Variables are values in your code that can represent different values each time the code runs. Here is an example of two variables in a script:
firstname = "Maaike";
x = 2;
And they can be assigned a new value while the code is running:
firstname = "Edward";
x = 7;
Without variables, a piece of code would do the exact same thing every single time it was run. Even though that could still be helpful in some cases, it can be made much more powerful by working with variables to allow our code to do something different every time we run it.
Declaring variables
The first time you create a variable, you declare it. And you need a special word for that: let, var, or const. We'll discuss the use of these three arguments shortly. The second time you call a variable, you only use the name of the existing variable to assign it a new value...
