RegExp and special caracters

Hi,

I want to search a substring within a string :

fonction (str, substr) {
        if (str.search(substr) != -1) {
                // do something
        }
}

My problem is that my string (and my substring) may contain the special
caracter : $
ex

substr = 'a$b';
str = 'xxxa$bxxx'

So in str.search(substr), the $ will be considered as an end of line
assertion, and the search won't succeed.

I found a solution by first escaping the $ :

fonction (str, substr) {
        var substrRe = substr.replace(/\$/, '\\$$');
        if (str.search(substrRe) != -1) {
                // do something
        }
}

but I'd like to known if you think of a better way to do it, for example
is there a notation, or a flag that allows a regexp to not consider the
special caracters.

thanx
Received on Tue Feb 7 21:34:04 2006