JSFiddle - React, Tailwind, and code Playground
HTML
<div id="foo1">
</div>
<div id="foo2">
<div>Foo Here</div>
</div>
JavaScript
var foo1 = jQuery('#foo1');
var foo2 = jQuery('#foo2');
foo1.html(foo2.children().clone());
<div id="foo1">
</div>
<div id="foo2">
<div>Foo Here</div>
</div>
var foo1 = jQuery('#foo1');
var foo2 = jQuery('#foo2');
foo1.html(foo2.children().clone());