Populating a 2D array in Javascript with random numbers

Question

I\'m trying to populate a 2D array in javascript with random numbers. Although each column in the array is random, each row is identical which is not what I want (see image bel

Answer 1

One way of doing this using map

let op = new Array(10)
         .fill(0)
         .map(e=>(new Array(5)
         .fill(0)
         .map(e=> Math.floor(Math.random() * 5))))

console.log(op)