 <p>Many ways to persist these days...</p> <ul> <li><code>localStorage()</code></li> <li>cookie</li> <li>cookie-like hacks</li> <li>server-side</li> </ul> <p>If this <em>intro</em> could be annoying for repeat users and the site has a login, I'd persist it server side. You don't want the user being hit with it when they use a different browser or computer to access your site.</p> <p>If not, use <code>localStorage()</code>.</p>