Random Numbers

Let's look at how to create random numbers in JavaScript.

var randomNumber = Math.random();
console.log(randomNumber);

By only doing this, it will print out numbers between 0 and 1:

Examples:

0.8813606250872746
0.05016415843877131

If you want below a certain number, then you can multiply the randomNumber with the limit (in this example the range is 0 – 12):

var randomNumber = Math.random() * 12;
console.log(randomNumber);

Examples:

11.553345329163783
3.468040622230529

Then, we can use floor to round the randomNumber downwards to the nearest integer:

var randomNumber = Math.floor(Math.random() * 12);
console.log(randomNumber);

Examples:

3
7

# Random Numbers