It wouldn't :) Data::JavaScript may help 
use Data::JavaScript;
print 'alert("',
Data::JavaScript::__quotemeta(qq,ab\x22q\x27uo\x27te\x22cd,),
'");',"\n";
__END__
alert("ab\"q'uo'te\"cd");

[download]
To get something you can inline 
perl -MData::JavaScript -MData::Dumper -e ' $Data::Dumper::Deparse=1; 
+die Dumper \&Data::JavaScript::__quotemeta '

[download]
which you can use like 
$VAR1 = sub {
            package Data::JavaScript;
            use strict 'refs';
            local $_ = shift @_;
            if ($OPT{'JS'} >= 1.3 and &Encode::is_utf8($_)) {
                s/([\x{0080}-\x{fffd}]+)/sprintf '\\u%0*v4X', '\\u', $
+1;/eg;
            }
            {
                use bytes;
                s/((?:[^ \x21-\x7E]|(?:\\(?!u)))+)/sprintf '\\x%0*v2X'
+, '\\x', $1;/eg;
            }
            s/\\x09/\\t/g;
            s/\\x0A/\\n/g;
            s/\\x0D/\\r/g;
            s/"/\\"/g;
            s/\\x5C/\\\\/g;
            s[</script>][\\x3C\\x2Fscript\\x3E]g;
            return $_;
        };



print 'alert("',
$VAR1->(qq,ab\x22q\x27uo\x27te\x22cd,),
'");',"\n";
__END__
alert("ab\"q'uo'te\"cd");

[download]

In reply to Re^2: Quote Escape by Anonymous Monk
in thread Quote Escape by pileofrogs

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