JSFiddle - React, Tailwind, and code Playground

HTML

<p>Loading...</p>

JavaScript

jQuery(function ($) {
    $(window).bind('beforeunload', function () {
        window.open("", "_savedata", "titlebar=0,width=100,height=100").saveData = window.saveData;
    });
    
    var store = window.open("", "_savedata"),
        paragraph = $("p")[0];        
    window.saveData = store.saveData ? store.saveData + " and again" : "restored data again";
    store.close();
    if (paragraph.textContent) {
        paragraph.textContent = window.saveData;
    } else {
        paragraph.innerText = window.saveDate;
    }
});