JSFiddle - React, Tailwind, and code Playground
HTML
<div class="form-group">
<label class="col-md-4 control-label">Section:</label>
<div class="col-md-8">
<select id="middle" class="form-control">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
<option>10</option>
</select>
</div>
</div>
<br /><br />
<div class="form-group">
<label class="col-md-4 control-label" id="output"></label>
<div class="col-md-8">
<select id="bottom" class="form-control">
<option>11</option>
<option>12</option>
<option>13</option>
</select>
</div>
</div>
JavaScript
$("#middle").change(function() {
var value = $(this).find(":selected").text();
$("#output").text(value);
sessionStorage.setItem(this.id, value);
}).val(function(){return (sessionStorage.getItem(this.id) ? sessionStorage.getItem(this.id) : $(this).find("option:first").text());}).change(); //set values on pageload