/span>

<span class="keyword">const</span> button <span class="operator">=</span> app<span class="punctuation">.</span><span class="function">querySelector</span><span class="punctuation">(</span><span class="string">'button'</span><span class="punctuation">)</span><span class="punctuation">;</span>
<span class="comment">// User clicks the &lt;button> element:</span>
<span class="comment">// -> button MouseEvent('click', {bubbles: true})</span>

console<span class="punctuation">.</span><span class="function