JSFiddle - React, Tailwind, and code Playground

HTML

<div id="container">
    
</div>

CSS

#container {
    
    height:200px;
    width:200px;
    background:green;
}

.banana {
    width:30px;
    height:30px;
    background:yellow;
}

JavaScript

var widget = $("<div>");
widget.addClass("banana");
jQuery.data(widget, 'color', 'brown');
widget.appendTo('#container');
console.log(jQuery.data(widget));