JSFiddle - React, Tailwind, and code Playground

HTML

<div id="divParent">
    <div class="div1">
        <div class="div2">
            hello
         </div>
        
        <div class="div3">
            my
         </div>        
    </div>
    
    <div class="div4">
        name
    </div>
    
    <div class="div5">
        <div class="div6">
            is
         </div>
        
        <div class="div7">
            <div class="div8">
                marco
             </div>
            
            <div class="div9">
                !
             </div>        
         </div>        
    </div>    
</div>

JavaScript

alert($('#divParent *').attr('class'));