JSFiddle - React, Tailwind, and code Playground

HTML

<h2>test <button class="sh">Show/hide</button>
<div class="box">
    <p class="firstpara">
        text
    </p>
</div>

JavaScript

$(".sh").click(function(){
$(".box").toggle();
    localStorage.setItem('display', $(this).siblings().is(":visible"));
});

var set = localStorage.getItem('display');
    if (set == 'true') {
        $('.box').show()
    }
else{
    $('.box').hide()
}