Errors can be coding errors made by the programmer, errors due to wrong input, and other unforeseeable things. Responses are grouped in five classes: Errors and exceptions are inevitable in application development As programmers, it is our responsibility to handle these errors gracefully so that the user experience of the application is not compromised Handling errors correctly also helps progra. Error objects are thrown when runtime errors occur
Javascript error reference below, you'll find a list of errors which are thrown by javascript These errors can be a helpful debugging aid, but the reported problem isn't always immediately clear The pages below will provide additional details about these errors Each error is an object based upon the error object, and has a name and a message. As nikola pointed out in the comment below, in case the backup url is invalid as well, some browsers will trigger the error event again which will result in an infinite loop.
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