Javascript regex backrefering

In Perl, this will successfully backreference TeXt.


  my $str = "this is TeXt";;

  if ( str =~ /(TeXt)/g ) ) {
    $str = $1;
  }

However, if I try something similar in Javascript:



  var str = "this is TeXt";;

  if ( str.match(/(TeXt)/g) ) {
    str = $1;
  }

This will not backreference TeXt

Any idea how I can access the captured group within the If block in Javascript?

But this isn't back-referring at all‽
str.match should return an object, you can access the matched groups somewhere there.

>>2
I have no idea how to do that. Am I able to do the same thing as in the Perl example? I just want $1 to be what was captured in the If match statement.

>>3
Read SICP.

Why fuck around with Javascript when you can learn D?

>>5
D is shit,stop spamming

>>3
The way Perl puts stuff in $1 and such is by having global variables(!) that get assigned to by the regexp parser. Javascript doesn't do this thank god. Your code should instead look something like this:

var matches = str.match(/(TeXt/g);
if (matches) {
    // do something with matches
}

You should look up the documentation for this on Mozilla's developer site (https://developer.mozilla.org/en/JavaScript).

>>7
thanks, that was very helpful

Use Jison. It's a JavaScript port of Bison.
http://zaach.github.com/jison/docs/