JavaScript variables serve as containers for storing data and can be declared in four ways:
In this initial example, x, y, and z are considered undeclared variables.
They are automatically declared upon their first usage.
Example
| x = 5; y = 6; z = x + y; |
| Note: It is widely regarded as good programming practice to declare variables before they are used. |
From the examples provided, it can be inferred that: