sample in javascript
function sample(arr, req) {
arr = arr.sort(()=>{ return 0.5 - Math.random() }) ;
let i = 0,
array = [];
while (i < req) {
array.push(arr[i])
++i
}
return array
}
//example
let arr = [1,2,3 ,4,5] ;
console.log( sample(arr , 2) ) // will return two random items