in reply to Re: Perl, JavaScript and quoting/escaping
in thread Perl, JavaScript and quoting/escaping

This is great!  However I have one question.  Is there an alternative to text_to_js_lit packaged as a module?

I'm surprised that (q{\'\'} eq q{\'\'});  wouldn't this be eq q{''}?

In any case the reason I ask is that for testing I'd like to pass perl strings to JS alert().  The problem was at first:

alert("Error: ERROR:  null value in column "bidder_username" violates not-null constraint");  Where I was so lost as to why I couldn't get my string to popup.

Then this:
alert("Error: ERROR:  null value in column "bidder_username" violates not-null constraint");

Where the result is not readable, this string is displayed as is.
  • Comment on Re^2: Perl, JavaScript and quoting/escaping

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Re^3: Perl, JavaScript and quoting/escaping
by ikegami (Patriarch) on May 06, 2011 at 00:12 UTC

    [ Please don't use <pre> here. Start paragraphs with <p>, and wrap computer text (code, input, output, etc) in <c>...</c>. <c>...</c> will even handle escaping "&", "<", ">", "[" and "]" for you. ]

    Is there an alternative to text_to_js_lit packaged as a module?

    package Module;

sub text_to_js_lit {
   my $s = @_ ? $_[0] : $_;
   $s =~ s/\\/\\\\/g;
   $s =~ s/'/\\'/g;
   # ...
   return qq{'$s'};
}

1;

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    I'm surprised that (q{\'\'} eq q{\'\'}); wouldn't this be eq q{''}?

    Say again?

    Where I was so lost as to why I couldn't get my string to popup. [...] Where the result is not readable, this string is displayed as is.

    What? You just said the same piece of code didn't display the message and displayed it as-is.

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      Haha, lol.
      I'm just not used to the markup of this forum and I can't escape properly.
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      qq{\&#39;\&#39;} eq q{&#39;&#39;}

      " VS &quote;

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        I'm surprised that (qq{\&#39;\&#39;} eq q{&#39;&#39;}; wouldn't this be eq q{''}?

        Still makes no sense to me.

        " VS &quote;

        So you're asking how to embed double quotes in a JS double-quoted string literal? This isn't really an appropriate place to ask that. One escapes them with a backslash: 

        alert("foo \"bar\" baz");    // foo "bar" baz

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      Looking for a CPAN module that's hopefully maintained with a bug tracker. For example there are vary good functions for escaping for URL, HTML, many forms of SQL, ect, ect, ect. Where is the one for JavaScript?
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