JSFiddle - React, Tailwind, and code Playground
HTML
<select id="test">
<option value="x">A</option>
<option value="xx">Boy</option>
<option value="xxz">B</option>
<option value="xxx">C</option>
</select>
<input type="button" id="my_button" value="test me"/>
JavaScript
$(function() {
$('#my_button').click(function() {
alert($('#test option').filter(function() {
return $(this).html() == "B";
}).val());
});
});