Explore the basics of JavaScript in greater detail to solve real-world problems.

Zero to Hero in JavaScript

This module aims to teach us how to write cleaner, more modular, and more scalable code in JavaScript by giving us an understanding of object-oriented programming (OOP). We'll start with the basics of object-oriented programming and build up to more advanced concepts such as data protection and inheritance. Along the way, we'll learn how each concept applies to JavaScript in particular, as well as how various JavaScript features make it a suitable language for object-oriented programming.

JavaScript: A Deep Dive

# Solution
The solution depends on first listing all the possible values the `operator` can take: 
- `'+'`
- `'-'`
- `'/'`
- `'*'`

Then, use `operator === '<some operator>'` to see if it is equal to any of the operators above. Create **if conditions** to cater to each condition  for the respective operation. Finally, assign it to `ans`.


## Variant 1

The code below shows simple `if` and `else if` conditions solve this problem.


Solution Review: Calculator

Solution