JSFiddle - React, Tailwind, and code Playground

by Graham Fairweather

HTML

<select id="mine">
    <option value="test1">Test1</option>
    <option value="test2">Test2</option>
    <option value="test3">Test3</option>
</select>
<div id="display1">
    <div>
        <p>Some Text in 1</p>
    </div>
    <div class="hide">
        <p>Some Text in 2</p>
    </div>
    <div class="hide">
        <p>Some Text in 3</p>
    </div>
</div>

CSS

.hide {
    display: none;
}

JavaScript

(function () {
    var slice = [].slice,
        nativeTrim = ''.trim,
        trim,
        classList;

    function isFunction(arg) {
        return typeof arg === 'function';
    }

    function isString(arg) {
        return typeof arg === 'string';
    }
    
    function handler(object, evt, func) {
        var ret;

        if (evt) {
            ret = func.call(object, evt);
            if (false === ret) {
                evt.stopPropagation();
                evt.preventDefault();
            }
        } else {
            window.event.target = window.event.srcElement;
            ret = func.call(object, window.event);
            if (false === ret) {
                window.event.returnValue = false;
                window.event.cancelBubble = true;
            }
        }

        return ret;
    }

    function addEventListener(object, type, func) {
        var uid = type + ':' + func,
            euid = 'e:' + uid;

        object[euid] = func;
        if (isFunction(object.addEventListener)) {
            object[uid] = function (evt) {
                handler(object, evt, object[euid]);
            };

            object.addEventListener(type, object[uid], false);
        } else if (isFunction(object.attachEvent)) {
            object[uid] = function () {
                handler(object, null, object[euid]);
            };

            object.attachEvent('on' + type, object[uid]);
        } else {
            throw new Error('Handler could not be added.');
        }
    }

    if (isFunction(nativeTrim)) {
        trim = function (text) {
            return nativeTrim.call(text);
        };
    } else {
        trim = function (text) {
            return text.replace(/^\s+|\s+$/g, '');
        };
    }

    if ('classList' in document.body) {
        classList = {
            contains: function (node, className) {
                return node.classList.contains(className);
            },

            add: function add(node, className) {
              ...