I'd like to extract variable names from this scratch of code:
var a,b,c, foo = "Test this is string";
I'd like the match result to contain a,b,c and foo and value optionally. I am able to split the string by a comma but I wonder if there's a way for this directly from the regex.
var\s+(.+)\s*,?\s*=.+;
You can test this out at http://rubular.com/
It shows me a,b,c,foo part but I'd like it to output in match groups like that:
You can add more capturing groups to capture all the parts of the string the way you want:
var\s+(\w+),(\w+),(\w+),\s*(\w+)\s*=.+;
Output of the demo:
1. a
2. b
3. c
4. foo
Mind that if there is a non-specified number of arguments, this will not work.
As an alternative, use a regex with \G that forces consecutive matches:
(?:var\s+|(?<!^)\G)[,\s]*(\w+)
Output of another demo:
Match 1
1. a
Match 2
1. b
Match 3
1. c
Match 4
1. foo
var , and then matches each sequence of alphanumerics separated with , and spaces.