I am trying to make a filter (user types in a string and I check the string against my list of names and only display names containing that string). I am having a lot of trouble with the regex and am either matching the whole string or pretty much none of the string.
The idea is:
var r:RegExp = new RegExp(filterRequest, "regex");
list.name.match(r);
I have tried:
var r:RegExp = new RegExp(filterRequest, "i"); //matches a-z and A-Z but no special ()*&^%$#@! characters
I have tried a combination of flags and escaping characters but none are working correctly. Any suggestions are appreciated - I also wouldn't mind a better explanation than the poor AS3 documentation . I am also reading this and have read this . Here is more character documentation in as3.
The biggest problem with RegExp(filterRequest, "i");
is that it returns matches for ()
together where a string may be hello (text)
but not (
or )
individually. It also matches ()*
, $
, ^
, \\(
, |
, and .
but many of the names do not use any of these characters.
Pattern Edit(s):
"\S\s" // any character except white space and only white space (every character?)
I replaced each special character with an escaped version of itself to fix my problem. I did not escape .
because it is useful in a filter to use as a wildcard any character match:
filterRequest= filterRequest.replace(/\\/g, "\\\\");
filterRequest= filterRequest.replace(/\(/g, "\\(");
filterRequest= filterRequest.replace(/\)/g, "\\)");
filterRequest= filterRequest.replace(/\^/g, "\\^");
filterRequest= filterRequest.replace(/\$/g, "\\$");
filterRequest= filterRequest.replace(/\|/g, "\\|");
filterRequest= filterRequest.replace(/\?/g, "\\|?");
filterRequest= filterRequest.replace(/\*/g, "\\*");
filterRequest= filterRequest.replace(/\+/g, "\\+");
filterRequest= filterRequest.replace(/\[/g, "\\[");
filterRequest= filterRequest.replace(/\{/g, "\\{");
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