Utility functions
up.fail(message, vars...)
function
experimental
This feature is experimental and not part of Unpoly's stable API.
It may be removed or changed without prior notice or deprecation.
Throws a JavaScript error
with the given message.
The message will also be printed to the error log. Also a notification will be shown at the bottom of the screen.
The message may contain substitution marks.
Examples
up.fail('Division by zero')
up.fail('Unexpected result %o', result)
Parameters
message
String
A message with details about the error.
The message can contain substitution marks
like %s or %o.
vars...
Array
A list of variables to replace any substitution marks in the error message.
