回答編集履歴
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情報の追加。
test
CHANGED
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@@ -1 +1,45 @@
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1
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`’`が両方全角です。
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---
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**追記：**
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とりあえずこう書けば動きます。
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```JavaScript
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document.getElementById('q2btn').onclick = function () {
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var num1 = parseFloat(document.getElementById('q2-1').value);
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var num2 = parseFloat(document.getElementById('q2-2').value);
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document.getElementById('q2').textContent = num1*num2;
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};
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```**動くサンプル：**[https://jsfiddle.net/dyzfs4d6/](https://jsfiddle.net/dyzfs4d6/)
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---
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input要素には終了タグが不要です。
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【input 要素 - HTML | MDN】
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44
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45
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[https://developer.mozilla.org/ja/docs/Web/HTML/Element/Input](https://developer.mozilla.org/ja/docs/Web/HTML/Element/Input)
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