JSFiddle - React, Tailwind, and code Playground

JavaScript

var options = ["rock","paper","scissors"],
    userChoice;

while (userChoice = prompt("Do you choose rock, paper or scissors?")) {
    
    console.log(options.indexOf(userChoice.trim().toLowerCase());
    // stop asking if answer is valid
    if (options.indexOf(userChoice.trim().toLowerCase()) >= 0) break;

    // otherwise, inform user of error and continue asking
    confirm("Error. You should input rock, paper or scissors!");
}


alert("You chose " + userChoice + ".");