javascript - Get random number from multidimensional array

Question

In a javascript function, I have a multidimension array as below. How can i get a random number from myObject[1]?

    var myObject= [
[ [2,3], [5,9], [4,7] ],
[ [1,3], [5,8] ],
[ [1,2], [5,7], [6,9] ],
[ [5,6], [1,7] ],
[ [4,6], [1,9], [3,7],[2,8] ],
[ [4,5], [3,9] ],
[ [8,9], [3,5], [1,4] ],
[ [7,9], [2,5] ],
[ [7,8], [1,5], [3,6] ]

];

Answer 1

This could work:

var randomNumber = getRandom(myObject[1]);

function getRandom(arr) {
   var random1 = Math.floor((Math.random() * (arr.length)));
   return arr[random1][Math.floor((Math.random() * (arr[random1].length)))];
}