JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container"> 
<h1 id="h1"></h1>

<ul id="list"></ul>
<button id="button">Next</button>
</div>

JavaScript

var allQuestions = [{
    question: "What is 4x6?",
    choices: [46, 15, 25, 24],
    correctAnswer: 3
}, {
    question: "What is 21x 21?",
    choices: [441, 2121, 388],
    correctAnswer: 0
}, {
    question: "Which number is prime?",
    choices: [1, 5, 10, 39],
    correctAnswer: 1
}, {
    question: "What is 65/5",
    choices: [3, 31, 12, 13, 21],
    correctAnswer: 3
}];

//get reference to the basic tags
var i = 0;
var numCorrect = 0;
var container= document.getElementById("container");
var list = document.getElementById("list");
var h1 = document.getElementById("h1");
var button = document.getElementById("button");

function buildQuestions(i) {
    for (var j = 0, length = allQuestions[i].choices.length; j < length; j++) {

        //create radio button
        var radio = document.createElement("input");
        radio.setAttribute('type', 'radio');
        radio.setAttribute('name', 'question' + i);
        radio.setAttribute('value', allQuestions[i].choices[j]);
        //create text of radio buttons
        var text = document.createTextNode(allQuestions[i].choices[j]);

        var li = document.createElement("li");
        list.appendChild(li);
        li.appendChild(radio);
        li.appendChild(text);

    }
    h1.innerHTML = allQuestions[i].question; //append to a textnode
}

buildQuestions(i);


document.getElementById("button").onclick = function () {
    var radios = document.getElementsByName("question" + i);
    console.log(radios);
    if (radios[allQuestions[i].correctAnswer].checked) {
        numCorrect++;
    }
    i++;
    while (list.firstChild){
		list.removeChild(list.firstChild);
	}

    if (i < allQuestions.length) {
        buildQuestions(i);
    } else {
        h1.innerHTML= "Results";
        button.parentNode.removeChild(button);
        var finalResult= document.createElement("p")
        var text= document.createTextNode("You answered " + numCorrect + " out of " + allQuestions.length+ " correctly.")
       ...