I have this regex:
let regex = /(?=\.|[\"])/;
test = "\"test.test\""
test.split(regex)
which outputs:
[""test", ".test", """]
whereas I want
[""", "test", ".test", """]
I can't see why it splits second double quote but not first double quote
P.S.: must keep ".test" like that (and not "." "test")
This is not pure regex solution but you may use this regex with a capture group and filter empty results:
const str = '"test.test"';
var arr = str.split(/(")|(?=\.)/).filter(Boolean)
console.log(arr)Issue with your approach:
Your regex is using a lookahead assertion that can be shortened to:
(?=[."])
Which means match a zero width match that has either a dot or " at immediate next position.
Since your input has " at the start it matches position 0, then position before dot and finally position before last closing " (total 3 matches).
