JSFiddle - React, Tailwind, and code Playground

by huston007

JavaScript

(function(rnd, userChoice){
    var choices = ["б","к","н"], 
        compareResult = rnd - choices.indexOf(userChoice);
    
    Math.abs(compareResult) == 2 && (compareResult = -compareResult);
    
    alert(choices[rnd] + userChoice +":"+ compareResult);
        
})(~~(Math.random()*3), prompt("б,к,н"))