JSFiddle - React, Tailwind, and code Playground
HTML
<select id="s" name="s">
<option value="[0]">-</option>
<option value="[1]">A</option>
<option value="[2]" selected>B</option>
<option value="[3]">C</option>
</select>JavaScript
var toSel = "[3]";
debugger;
$("#s option[value='" + toSel +"']").prop('selected', true);