in reply to Am I javascript or not?

If you want to make this run a bit faster, and aren't worried about false positives on fringe cases (such as people adding non-standard attributes), you can simplify the test to 
  my $attr = shift;
  my @found = { grep /^on[A-Z]/ } keys %$attr;

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This also "future proofs" the code against the possiblity of someone's browser adding yet another new event.

Update: D'oh. Make that   my @found = { grep /^on/ } keys %$attr; since the attributes all come back lower-case.

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Re: Am I javascript or not? (boo)
by boo_radley (Parson) on Mar 30, 2002 at 18:43 UTC
    dws says : 
      my $attr = shift;
  my @found = { grep /^on[A-Z]/ } keys %$attr;

    [download]
    I thought about doing this, but I wanted to stick to known events. If that's not a concern, then your grep is acceptable as well.
    I originally started out with an inclusive checker, but the performance was pretty awful as I was checking that each tag had acceptable attributes. (An alt attribute is ok for an img tag, but not a p tag, fr instance).
    Another potential speed boost (on closer examination) would come from making all @events lowercase, and getting rid of the i switch in the current grep, as HTML::Parser passes parameters to its handlers in all lowercase.
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[d/l]

In Section Cool Uses for Perl