JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" id="btn_1" value="bouton 1" />
<br />
<input type="button" id="btn_2" value="bouton 2" />
<br />
<input type="button" id="btn_3" value="bouton 3" />
<br />
<div id="new1">new 1</div>
<div id="new2">new 2</div>
<div id="new3">new 3</div>

JavaScript

$("#btn_1, #btn_2, #btn_3").click(function () {
    idx = $(this).attr('id').split('_')[1];
    $('#new' + idx).css({
        display: 'none'
    });
    localStorage['cle' + idx] = "news"; //créer clé au clic
});

$(document).ready(function () { //si la clé existe, on enlève le "1" et le "new"
    var i = 0
    while (++i < 4) {
        if (localStorage['cle' + i]) {
            $('#new' + i).css({
                display: 'none'
            });
        }
    }
});