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JavaScript JavaScript Basics (Retired) Working With Numbers The Random Challenge Solution

Zach Meissner
Zach Meissner
1,347 Points
Posted by Zach Meissner
Zach Meissner
1,347 Points

Is this still a valid solution to completing this exercise?

var userNumber = prompt('Give me a number');
document.write(parseInt (Math.random() * userNumber)) +1;

3 Answers

Chris Shaw
Chris Shaw
26,676 Points
Chris Shaw
Chris Shaw
26,676 Points

Hi Zach,

The only issues I see are.

  1. You have parseInt in the wrong spot, it doesn't need to be wrapped around Math.random() as that's already a valid number
  2. you don't have the closing parenthesis after your +1 addition
var userNumber = prompt('Give me a number');
document.write(Math.random() * parseInt(userNumber) +1);

Also for all times sake if you don't have a huge floating pointing value you can use Math.floor() to remove everything after the decimal point.

var userNumber = prompt('Give me a number');
document.write(Math.floor(Math.random() * parseInt(userNumber) +1));

Happy coding!

Marcus Parsons
Marcus Parsons
15,719 Points
Marcus Parsons
Marcus Parsons
15,719 Points

Hey Zach,

The range for this solution always has a minimum of 0 and a maximum of userNumber. And you cannot add a number to a document.write() statement. It would need to be done within the document.write() statement and not outside of it.

But, the actual solution for this exercise is to allow the user to define the minimum and maximum range for the random numbers, which requires more than one input. So you would need to define variables that get the user's maximum and minimum ranges as Dave has done. Doing it the way Dave does is the best method.