generateUID(){ let text = ''; let possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'; for (let i = 0; i < 15; i++){ text += possible.charAt(Math.floor(Math.random() * possible.length)); } localStorage.setItem('uid', text); return text; }