I recently came across a repository that was part of a bootcamp curriculum for learning full stack development. In one of the lessons on jQuery, students were tasked with building a calculator. However, I noticed some strange variables in the HTML where text content should have been. I'm curious about the purpose of these symbols (÷ and ×) and when and how they should be used. It's possible that I am overthinking it and they serve no real significance. The specific code snippet I'm referring to is shown below.
<div class="card-body">
<button id="button-1" class="btn btn-primary number" value="1"><span>1</span></button>
<button id="button-2" class="btn btn-primary number" value="2"><span>2</span></button>
<button id="button-3" class="btn btn-primary number" value="3"><span>3</span></button>
<button id="button-plus" class="btn btn-danger operator" value="plus"><span>+</span></button>
<br><br>
<button id="button-4" class="btn btn-primary number" value="4"><span>4</span></button>
<button id="button-5" class="btn btn-primary number" value="5"><span>5</span></button>
<button id="button-6" class="btn btn-primary number" value="6"><span>6</span></button>
<button id="button-minus" class="btn btn-danger operator" value="minus"><span>−</span></button>
<br><br>
<button id="button-7" class="btn btn-primary number" value="7"><span>7</span></button>
<button id="button-8" class="btn btn-primary number" value="8"><span>8</span></button>
<button id="button-9" class="btn btn-primary number" value="9"><span>9</span></button>
<button id="button-multiply" class="btn btn-danger operator" value="times"><span>×</span></button>
<br><br>
<button id="button-0" class="btn btn-primary number" value="0"><span>0</span></button>
<button id="button-divide" class="btn btn-danger operator" value="divide"><span>÷</span></button>
<button id="button-power" class="btn btn-danger operator" value="power"><span>^</span></button>
<button id="button-equal" class="btn btn-success equal" value="equals"><span>=</span></button>
<br><br>
<button id="button-clear" class="btn btn-dark clear" value="clear"><span>clear</span></button>
</div>
</div>
</div>