class="punctuation">(</span>app<span class="punctuation">.</span>innerHTML<span class="punctuation">)</span><span class="punctuation">;</span>
<span class="comment">// -> '&lt;span>Sold: yes&lt;br>&lt;button>Sell&lt;/button>&lt;/span>'</span>
</code></pre><p>In the real-world, a more valid case for using the event parameter might be to handle the content of a text input to write into the <a href="/api/the-essentials/creating-stores/store/"><code>Store</code></a>. See the Todo demo for a working example of d