JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://docs.sencha.com/ext-js/4-0/extjs-build/resources/css/ext-all.css">

JavaScript

Ext.widget('button', {
    renderTo: Ext.getBody()
    , text: 'Show Message'
    , handler: function () {
        Ext.Msg.show({
            title: 'Test',
            msg: 'Message body',
            buttonText: {ok: "text1", yes: "text1", no: "text1", cancel: "text1"},
            buttons: Ext.MessageBox.YESNOCANCEL
        });
    }
});