Automatic Semicolon Insertion in Javascript

You can write (mostly) semi-colon-less Javascript code. See example below.

However, there is a significant performance impact for doing so. See example below.

ASI performance is abysmal

A bug was created on 2013-01-24 and assigned to nobody. See Bug 107901: ASI performance is abysmal

Summary

IMHO - Perhaps, one day ASI performance will become a priority and the hit won't be significant, but until then keep using semicolons.

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