ERROR HANDLING
No one doubts the importance of error handling in programming. Every major web application needs a good error-handling protocol and most good applications have one, though it is typically on the server side of the application. In fact, great care is usually taken by the server-side team to define an error-logging mechanism that categorizes errors by type, frequency, and any other metric that may be important. The result is the ability to understand how the application is working in the public with a simple database query or report-generating script.
Error handling has slowly been adopted on the browser side of web applications even though it is just as important. An important fact to understand is that most people who use the web are not technically savvy—most don't even fully comprehend what a web browser is, let alone which one they're using. As described earlier in this chapter, each browser behaves a little bit differently when a JavaScript error occurs...
