JSFiddle - React, Tailwind, and code Playground

by wisegorilla

HTML

<select id="mySelectBox">
    <option value="1"> first</option>
    <option value="2" selected="selected" data-id="sss"> second </option>
    <option value="3"> third </option>
</select>

JavaScript

alert($('#mySelectBox option:selected').data('id'));