[Custom]: callbacks don't deal with exceptions

[hayatoito]

Title: [Custom]: callbacks don't deal with exceptions (bugzilla: 27440)

Migrated from: https://www.w3.org/Bugs/Public/show_bug.cgi?id=27440

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comment: 0
comment_url: https://www.w3.org/Bugs/Public/show_bug.cgi?id=27440#c0
Anne wrote on 2014-11-26 10:36:00 +0000.

"Invoke CALLBACK with ELEMENT as callback this value and, if present, using string values in CALLBACK as arguments"

This algorithm needs to say what happens to exceptions. I guess you want to hand them over to HTML's "report the exception" algorithm similarly to event listeners/handlers.