I want to replace a part of url:
Origin-> https://example.u-test.com/ex-2<br>
Destination-> https://example.u-test.com/ex <br>
So what I want is to remove part after "-" but only in the second part after first slash.
With url.replace(/ *\-[^.]*\. */g, ".") I get:
I want to remove "-2" after ex, not "-test" in the first part.
What is the right regex expression?
You can use the URL interface for that. it allows you to easily read and modify the different components of a given URL.
const url = new URL("https://example.u-test.com/ex-2");
const domain = url.hostname;
const pathname = url.pathname;
const part = pathname.split("-")[0];
console.log(domain + part);In case you absolutely want to do this with regular expressions:
const url = "https://example.u-test.com/ex-2"
const result = url.replace(/-[^-]*$/g, "")
console.log(result)Explanation:
If you want to remove the part after the last slash or dash, you should begin your match on that point. The above regular expression starts matching at the last dash (-) character in the line. Regex will match only the last dash because the subsequent characters it searches for is everything except another dash, followed by the end of the line ($).
- matches a dash (-) character[^-]* matches everything except for another dash$ after the dash and the non-dash characters, there must be the end of the line