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

# Task

A data analyst wants to do **mathematical** operations on a series of values. He was able to extract multiple operands and label them as *left* and *right* operands. He extracted operators too. The only task left is the operation itself. He converted types of operands to number, but left the operator to the string type. Your task: to write code which does the mathematical operation depending on the value of the operator.



# Problem statement
You are given three **variables** named `left_operand`, `right_operand`, and `operator`. Write code for `operator` values so that each value does the following:


- `'+'`: **Add** `left_operand` to `right_operand` and assign the result to `ans`.
- `'-'`: **Subtract** `left_operand` from `right_operand` and assign the result to `ans`.
- `'*'`: **Multiply** `left_operand` with `right_operand` and assign the result to `ans`.
- `'/'`: **Divide** `left_operand` with `right_operand` and assign the result to `ans`.
- For any other **operator**, assign `NaN` to `ans`. 

Remember, there are a lot of ifs to what the **operator** is. Find a solution to all ifs.

Good luck!

Exercise: Calculator

Task