JavaScript 코드 스니핏

• http://www.reddit.com/r/javascript/comments/34tpw7/single_page_apps_cache_problem/

var lastActivity = new Date().getTime();
function trackActivity()
{
    var now = new Date().getTime();
    if (now - lastActivity > 60 * 60 * 1000) // one hour inactivity
    {
        window.location.reload(true);
    }
    lastActivity = now;
}
window.addEventListener('mousemove', trackActivity, false);
window.addEventListener('keypress', trackActivity, false);