JSFiddle - React, Tailwind, and code Playground

HTML

<ul>
    <li>1</li>
    <li>2</li>
    <li class = "middle_item">
        <a>
            <div id= "box">
                <div id= "header">
                    <p>1234567</p>
                </div>
            </div>
            <div></div>
            <div></div>
                
        </a>           
    </li>
    <li>4</li>
    <li>5</li>
</ul>

JavaScript

var aqui = $("#header p").text();
alert(aqui);