I'm running a really large administration application with javascript based user interface. It is used by a large number of users on different computers with different operation systems and different browsers. Sometimes weird javascript errors occur. And when such error occurs, the browser stops the execution of the script and the users usually reports something like "it didn't work".
Luckily, there is a way how to handle this and although it may not cover 100% of all the errors, it might be helpful when dealing with errors at the client side. If you define the window.onerror handler, it will be executed when an error occurs. Three arguments are passed to the handler - the error message, the URL of the script and the line, where the error is located.
