using math.random on an array of items code example
Example 1: Javascript get random item from array
var colors = ["red","blue","green","yellow"];
var randomColor = colors[Math.floor(Math.random()*colors.length)]; //pluck a random color
Example 2: get random elements from array javascript
const arr = myArray
.map((a) => ({sort: Math.random(), value: a}))
.sort((a, b) => a.sort - b.sort)
.map((a) => a.value)