Build a BMI calculator

Write a function that calculates a user BMI. BMI = weight/height^{^2} Your code should request for the user's weight and height and then return their bmi to them. Your return statement should be "[BMI]kg/m^{^2}.

P.S: To simplify, use prompt and alert (depending on how your language calls it) when necessary and make sure your code is testable on the Google Chrome console (developer tool)