Dojo fiddle

This JSFiddle is configured and ready to use for testing the Dojo framework.

HTML

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/dojo/1.9.1/dijit/themes/claro/claro.css">
<input type="text" id="myTxt" />
<input type="text" id="myTxtWidget" data-dojo-type="dijit/form/TextBox" />

JavaScript

require(["dojo/dom", "dijit/registry", "dojo/ready", "dijit/form/TextBox", "dojo/parser"], function(dom, registry, ready) {
    ready(function() {
        console.log(dom.byId("myTxt")); // Will work
        console.log(dom.byId("myTxtWidget")); // Will "probably" work, but not recommended
        console.log(registry.byId("myTxt")); // Will not work
        console.log(registry.byId("myTxtWidget")); // Will work
    });
});