JSFiddle - React, Tailwind, and code Playground

HTML

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

JavaScript

document.getElementsByTagName("select")[1].focus();
function mousehandler() {
    alert("For the purpose of psych experiment, you can't use mouse.");
    setTimeout(function(){document.getElementsByTagName("select")[1].focus();},1);
    return false;
}
document.oncontextmenu = mousehandler;
document.onmousedown = mousehandler;