JSFiddle - React, Tailwind, and code Playground

HTML

<div>
  
    <h2><a href="http://code-cocktail.in" target="blank">Code cocktail demo</h2>
    <input type="text" id="trigger_select">
<a href="javascript:void(0);" id="trigger_select">show select box option</a>

<select id="listbox">
 <option>List 1</option>
 <option>List 2</option>
</select>
<div>

JavaScript

function ExpandSelect(select, maxOptionsVisible)
{
        //
        // ExpandSelect 1.00
        // Copyright (c) Czarek Tomczak. All rights reserved.
        //
        // License:
        //      New BSD License (free for any use, read more at http://www.opensource.org/licenses/bsd-license.php)
        //
        // Project's website:
        //      http://code.google.com/p/expandselect/
        //

        if (typeof maxOptionsVisible == "undefined") {
                maxOptionsVisible = 20;
        }
        if (typeof select == "string") {
                select = document.getElementById(select);
        }
        if (typeof window["ExpandSelect_tempID"] == "undefined") {
                window["ExpandSelect_tempID"] = 0;
        }
        window["ExpandSelect_tempID"]++;

        var rects = select.getClientRects();

        // ie: cannot populate options using innerHTML.
        function PopulateOptions(select, select2)
        {
                select2.options.length = 0; // clear out existing items
                for (var i = 0; i < select.options.length; i++) {
                        var d = select.options[i];
                        select2.options.add(new Option(d.text, i))
                }
        }

        var select2 = document.createElement("SELECT");
        //select2.innerHTML = select.innerHTML;
        PopulateOptions(select, select2);
        select2.style.cssText = "visibility: hidden;";
        if (select.style.width) {
                select2.style.width = select.style.width;
        }
        if (select.style.height) {
                select2.style.height = select.style.height;
        }
        select2.id = "ExpandSelect_" + window.ExpandSelect_tempID;

        select.parentNode.insertBefore(select2, select.nextSibling);
        select = select.parentNode.removeChild(select);

        if (select.length > maxOptionsVisible) {
                select.size = maxOptionsVisible;
        } else {
                select.size =...