Use a combination of Math.floor() and Math.random() to generate random integers.

This simple one-line expression returns a number between 1 and 6 (both included):

Math.floor(Math.random() * 6 + 1)

There are 6 possible outcomes here: 1, 2, 3, 4, 5, 6.

General Formula

To generate a random integer between min and max (inclusive):

Math.floor(Math.random() * (max - min + 1) + min)

For example, to get a random number between 10 and 20:

Math.floor(Math.random() * (20 - 10 + 1) + 10)

Lessons in this unit:

0:	Introduction
1:	▶︎ Generate Random Numbers in a Range
2:	Get Index in for...of Loop
3:	Unlimited Function Parameters
4:	Return Result from Async Function
5:	Encode and Decode URLs
6:	Destructuring Tips
7:	Number Formatting
8:	Regex Recipes
9:	Dynamic function name in JS