JSFiddle - React, Tailwind, and code Playground

JavaScript

function addFullScreenMenu () {
var menu = document.createElement('menu');
var item = document.createElement('menuitem');
menu.setAttribute('id', 'fsmenu');
menu.setAttribute('type', 'context');
item.setAttribute('label', 'Fullscreen');
item.addEventListener('click', function (e) {
if (window.fullScreen) {
document.body.mozCancelFullScreen();
} else {
document.body.mozRequestFullScreen();
}
});
menu.appendChild(item);
document.body.appendChild(menu);
document.body.setAttribute('contextmenu', 'fsmenu');
}


 if (document.addEventListener) {
        document.addEventListener('contextmenu', function(e) {
            alert("You've tried to open context menu"); 
            e.preventDefault();
        }, false);
    } else {
        document.attachEvent('oncontextmenu', function() {
            alert("You've tried to open context menu");
            window.event.returnValue = false;
        });
    }


addFullScreenMenu();