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Michelle Dobbs
Full Stack JavaScript Techdegree Student 1,060 PointsPlease explain the *10 and +1 in this problem
When writing code to generate a random whole number between 1 and 10, why am I multiplying by 10 and then adding 1? It is working each time it is run, of course, I am just trying to understand why it is working. Thanks in advance!
var random = Math.floor(Math.random() *10)+1;
2 Answers
KRIS NIKOLAISEN
54,967 PointsMath.random() generates a random number between 0 (inclusive), and 1 (exclusive)
Multiplying by ten makes the number between 0 (inclusive), and 10 (exclusive)
Taking the floor makes the number between 0 (inclusive) and 9 (inclusive)
Adding 1 makes the number between 1 (inclusive) and 10 (inclusive)
So it's a formula for generating a random number between 1 and 10
Michelle Dobbs
Full Stack JavaScript Techdegree Student 1,060 PointsThanks! You are awesome!