Extract subdomain or domain from url string [duplicate]

Question

I have the following string :

var url = "po1.btr.en.mycompany.com";

I would like to extract the following subdomain ".btr.en.mycompany.com".

How can i do this ?

You could split on the dot character, then take everything but the first and concatenate them back together with a dot. — Shotgun Ninja
– Shotgun Ninja, Commented May 21, 2015 at 14:38
There are a bazillion ways to do that. What exactly are the criteria of what should be removed? — Cerbrus
– Cerbrus, Commented May 21, 2015 at 14:41

brso05 · Accepted Answer · 2015-05-21 14:45:51Z

0

You can find the match using regex:

<script type="text/javascript">
    var link = "po1.btr.en.mycompany.com";
    var reg = /btr.*\.com/;
    window.alert(reg.exec(link));
</script>

answered May 21, 2015 at 14:45

brso05

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Comments

Jon Joyce · Accepted Answer · 2015-05-21 14:48:30Z

0

This should do what you need :)

var url = "po1.btr.en.mycompany.com";
var clean = url.substr(url.indexOf('.') + 1);
alert(clean);

answered May 21, 2015 at 14:41

Jon Joyce

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var clean = url.substr(url.indexOf('.') + 1);. You don't need a replace.

Also: alert(clean)