JSFiddle - React, Tailwind, and code Playground

HTML

<select>
    <option>0</option>
    <option>1</option>
    <option>2</option>
</select>

<input type="button" id="rst1" value="Reset com jQuery" />
<input type="button" id="rst2" value="Reset sem jQuery" />

JavaScript

$("#rst1").on("click", function() {
    $("select").prop("selectedIndex", 0);
});

document.getElementById("rst2").onclick = function() {
    document.querySelector("select").selectedIndex = 0;
};