js get random element from array code example

Example 1: random string from array javascript

var textArray = [
    'song1.ogg',
    'song2.ogg'
];
var randomNumber = Math.floor(Math.random()*textArray.length);

Example 2: get random entry from array javascript

const rnd = (arr) => { return arr[Math.floor(Math.random() * arr.length)] };