How to get only hostname from the url using javascript regex?

Question

I have below urls

1) https://stackoverflow.com/questions/ask?guided=true
2) https://www.youtube.com/watch?v=ClkQA2Lb_iE
3) https://trello.com/b

I need to get only the host name from the above urls. So the output should be

1) stackoverflow
2) youtube
3) trello

Please refer below answer stackoverflow.com/questions/569137/… — Ritesh Singh Rajput
– Ritesh Singh Rajput, Commented May 6, 2019 at 9:32

Mohammad · Accepted Answer · 2019-05-06 09:41:09Z

2

Use pattern /(\w+)\.\w{2,}(\/|\?|$)/ to getting domain name from url. The regex match any string is before / or ?

var getName = function(url){
  return url.match(/(\w+)\.\w{2,}(\/|\?|$)/)[1];
}

console.log(
  getName("https://stackoverflow.com/questions/ask?guided=true"),
  getName("https://www.youtube.com/watch?v=ClkQA2Lb_iE"),
  getName("https://trello.com")
)

answered May 6, 2019 at 9:41

Mohammad

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4 Comments

Profer Over a year ago

Hi for this one https://www.google.co.in/ I am getting only co... Could you pls check this

Mohammad Over a year ago

@Profer You'r right. It is because there isn't a right solution to detecting domain name using regex or parsers. Even javascript URL object that parse url return google.co.in as hostname and does not return google. I think you have list of domain suffix to do this work.

Profer Over a year ago

So it is not possible? I have to take full url google.co.in ?

Mohammad Over a year ago

@Profer I can't find any solution for it, you can only get hostname contain domain suffix

mrded · Accepted Answer · 2022-07-26 14:18:54Z

2

You can get a host name like so, without Regex.

const getHostFromUrl = (url: string): string => {
  return new URL(url).hostname.replace("www.", "");
};

getHostFromUrl('https://www.youtube.com/watch?v=ClkQA2Lb_iE') // youtube.com

answered Jul 26, 2022 at 14:18

mrded

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