I have a question on the Random Challenge. I am getting lost with the prompt commands, parseInt, Mathfloor, etc.

var message = "" + randomNumber + " is a number between " + bottomNumber + " and " + topNumber + ".";

Let's break up this string piece by piece.

You started out with quotations implying you started a string and end it immediately, Now why did you do that? Because the next value in your string is something you want from the coding you have done and stored it in the variable called random number. Here random number in the final output will display what's stored in your variable. Change the random number's value to 2, you will have 2 in your final string.

And we add this symbol "+" to concatenate basically or just add two different stuff. Now if you had put random number in the quotation marks as well, It would not have displayed a number=2, it would have literally replicated the random number string.And if you add a variable inside a string for the final output you just close the quotations and concatenate it with your variable. Now it's confusing right? Let me give you an example.

Lets just say my variable have these values:

randomNumber =2;

bottomNumber= 1;

topNumber =3;

var message = "" + randomNumber + " is a number between " + bottomNumber + " and " + topNumber + ".";

output will be--->"2 is a number between 1 and 3" Now just notice how variable have been changed.

Take another eg. Here I have put everything in a single string.

var message = " + randomNumber + is a number between + bottomNumber + and + topNumber + .";

Guess the output??

It will be this:

• randomNumber + is a number between + bottomNumber + and + topNumber + .;

SO, in a nutshell,Your fixed part in the string, which you don't want to change goes inside the quotations and the changing part,i.e, stored in some variable you concatenate it with a string.

I hope you understand. If you feel You still have any questions, feel free to ask it.