JSFiddle - React, Tailwind, and code Playground
by j08691
HTML
<div id="container">
<h1>Hi</h1>
<h2 class="Hi">Test</h2>
Hi</div>
JavaScript
$("#container").contents().each(function () {
if (this.nodeType === 3) this.nodeValue = $.trim($(this).text()).replace(/Hi/g, "Hello")
if (this.nodeType === 1) $(this).html( $(this).html().replace(/Hi/g, "Hello") )
})