JSFiddle - React, Tailwind, and code Playground
HTML
<div>
<select name='logopt'>
<option value='fulllog'>Complete Log</option>
<option value='InfoLog'>INFO Log</option>
<option value='ErrorLog'>Error Log</option>
</select>
</div>
<input type="button" onClick ="return test();"/>
JavaScript
function test()
{
var x = $('select[name=logopt]').val();
alert(x);
}