JSFiddle - React, Tailwind, and code Playground

by Mansfield

HTML

<select id="testSelect">
    <option value="option1" label="1">Option 1</option>
    <option value="option3" label="3">Option 3</option>
    <option value="option5" label="5">Option 5</option>
</select>

JavaScript

$(function () {
    /*$("#testSelect option:eq(1)").after("<option value='option2' label='2'>Option 2</option>");*/ 
    $("#testSelect option:label(1)").after("<option value='option2' label='2'>Option 2</option>"); 
    
});