title: Cheating online test javascript timer
body: <p>First of all, I have no intention of cheating, I'm just one of these people who tend to see flaws everywhere.</p>
  
  <p>These days before the job interview you may be required to do online test, most of them have javascript timers (countdown), so you don't have enough time to google the answers.</p>
  
  <p>But the way I see it (correct me if I'm wrong), timer is just a decreasing variable that once reaches 0 (say) stops the test. I seems that in many cases it is possible to look the source code, find the name of the variable and force-increase it using the console, so you have all time in the world.</p>
  
  <p>I'm interested is it always possible to manipulate such "timer" variable using console, or there are ways to prevent it?</p>