regex - How do I count inside of a javascript regular expression? -

how stick counter in javascript regular expression substitution?

the question answered here perl/pcres.

i've tried obvious string.replace(/from/g, "to "+(++count)), no (the ++count evaluated once @ start of string.replace, seems).

you can pass along function called per match replace:

// callback takes match first parameter , groups // additional, left empty because i'm not using them in function. string.replace(/from/g, function() {   return "to " + (++count); }); 

i've found extremely handy tool in replacing complex string portions (like user comments embedded codes) on client side ease burden bit on server.