addQuiz.html

<script language="javascript" type="text/javascript">
	var Choices = [];
	// ①問題となる文字列を設定
	const mondai = "1 + 1 = ??";
	// ②正解となる文字列を設定
	const seikai = "2";
	// ③選択肢を増やす、7行目を例に行をコピーして張り付ける
	Choices.push("2");
	Choices.push("4");

	document.write("  Quiz"),document.write("    <h5>"+mondai+"</h5>");for(let e=0;e<Choices.length;e++)document.write("    <div>"),document.write('\t  <input type="radio" name="quizRadio" onchange="checkAnswer()" value="'+Choices[e]+'" >'),document.write("\t  <label id="+e+' for="radio">'+Choices[e]+"</label>"),document.write("\t</div>");function checkAnswer(){var e=document.getElementsByName("quizRadio");for(let t=0;t<e.length;t++)if(e[t].checked&&e[t].value==seikai){document.getElementById(t);alert("正解")}}
</script>