JSFiddle - React, Tailwind, and code Playground

HTML

<div id='container'>
    <div class='red'>red</div>
    <span class='red'>red</span>
    <a href='#'>test</a>
    <img src='test'/>
    
    <br/>
</div>

CSS

.red{
    border: 1px solid red;
}

JavaScript

$('#container').find('*:not(br,a,img)').contents().unwrap();
console.log($('#container').html());