JSFiddle - React, Tailwind, and code Playground
HTML
<select id="Type112" class="GridList" rownumber="0" value="Q2 Only" ><option></option><option value="1" selected="selected">Q1 Only</option><option value="2">Q2 Only</option></select>
JavaScript
var s = document.getElementById("Type112");
var selNum = s.options[s.selectedIndex].value;
alert(selNum);