JSFiddle - React, Tailwind, and code Playground

by VixedS

HTML

<button onclick="alert(getRandom(letters));">Get Random</button>

CSS

button{
  display:block;
  margin:40px auto;
  padding:20px 50px;
 }

JavaScript

var letters = ["A", "B", "C"];

function getRandom(array){
  var notGivenItems = array.map(function(el) {
    return el;
  });
  var getIndex=function(){
  	return Math.floor(Math.random() * notGivenItems.length)
  };
  if (notGivenItems.length === 0)
    return;
    
  return array.splice(getIndex(), 1)[0];
}