Why Track JavaScript Errors?
As explained in my Understanding JavaScript Error Messages article, one of the most common criticisms about JavaScript is that it is painfully difficult to debug. Cryptic error messages, inconsistent error handling among browsers, combined with the option to suppress error messages, can make getting a handle on bugs a nightmare for the application support persons. In most cases, you won find out that your application is running into problems until frustrated customers call you up to complain that it isn behaving the way it is supposed to. Then, the support person has to go through a tedious exercise of trying to assess the cause of the behavior via phone or email. Later, the developers have to try to reproduce the behavior as a starting point for determining what went wrong and hopefully how to repair it. A Typical JavaScript Error In an effort to make supporting web applications easier, developers have implemented their own error handling that presents more detailed messages, the idea
