title: Why is Firefox error console showing two different line numbers?
body: <p>I'm using the newest Firefox for Ubuntu 14.04. I've noticed that sometimes the console can't show exactly the source of an error. For instance, right now I got a JavaScript "SyntaxError: expected expression, got ','" and the source in blue reads myfile.php:1:24. But when I click on the blue link, it opens the php file in the beginning, not showing any error at all.</p>
  
  <p>What do the numbers 1 and 24 mean here? And why can't it show the exact location of the error?</p>