Just posting my answer

Question

So, the first part was easy, but then it got tricky when I needed to figure out how to take the input for the minimum value of the range as well. I'm used to python, and it would of been easy to do but since js is a different language, I had to look up MDN.

function getRandomArbitrary(min, max) { return Math.random() * (max - min) + min;

so, I simply made another user prompt for min. Half the time I was simply debugging simple errors rather than figuring out the logic.

Here's my actual code

var userMaxInput = parseInt(prompt("input a number to use for the Max number for the desired range of the random number generator"))

var userMinInput = parseInt(prompt("input a number to use for the Min number for the desired range of the random number generator"))

var randomNumber = Math.random() * (userMaxInput-userMinInput) + userMinInput;

document.write(randomNumber)

Answer 1 · 2019-05-05T22:34:33Z

May 5, 2019 10:34pm

FYI: this formula from MDN returns a floating-point number that "is less than (and not equal) max". But a perhaps more common implementation (and what is shown in the video) chooses only an integer number, and it can include the max value:

function getRandomIntegerInRange(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

Answer 2 · 2019-05-06T16:38:01Z

May 6, 2019 4:38pm

Ah, ok, I see, because we want to include the max. Can it also include the min? Or is it everything above the min and including the max?

Answer 3 · 2019-05-06T16:42:09Z

May 6, 2019 4:42pm

And I understand what I did, I wasn't rounding to an integer. Which is why you need that +1

Welcome to the Treehouse Community

Looking to learn something new?

Reza Zandi

Reza Zandi

Just posting my answer

3 Answers

Steven Parker

Steven Parker

Reza Zandi

Reza Zandi

Steven Parker

Steven Parker

Reza Zandi

Reza Zandi

Steven Parker

Steven Parker