JSFiddle - React, Tailwind, and code Playground

JavaScript

// #9522

var frag = document.createDocumentFragment(),
    elem = document.createElement('div');
    
/* Comment out 2 out of 3 to test each case separately */
    
//frag.appendChild(elem);
$(frag).append(elem);
//$(elem).appendTo(frag);
    
console.log(frag);