Get The Current Domain Name With Javascript Not the path etc

Question

I plan on buying two domain names for the same site   Depending on which domain is used I plan on providing slightly different data on the page   Is there a way for me to detect the actual domain name that the page is loading from so that I know what to change my content to   I ve looked around for stuff like this but most of it doesn t work the way I want it to   For instance when using  document write document location    on JSFiddle it returns     http   fiddle jshell net  display    i e  the actual path or whatever that is

User · Answer

I m new to JavaScript  but cant you just use  document domain    Example    lt p id  ourdomain  gt  lt  p gt    lt script gt  var domainstring   document domain  document getElementById  ourdomain   innerHTML    domainstring    lt  script gt    Output   domain com   or  www domain com   Depending on what you use on your website

User · Answer

If you want to get domain name in JavaScript  just use the following code   var domain name   document location hostname  alert domain name     If you need to web page URL path so you can access web URL path use this example   var url   document URL  alert url

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If you are only interested in the domain name and want to ignore the subdomain then you need to parse it out of host and hostname    The following code does this   var firstDot   window location hostname indexOf       var tld     net   var isSubdomain   firstDot  lt  window location hostname indexOf tld   var domain   if  isSubdomain        domain   window location hostname substring firstDot    -1   0   firstDot   1     else     domain   window location hostname      http   jsfiddle net 5U366 4

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Combining a few answers from the above  the following works really well for me for destroying Cookies              Utility method to obtain the domain URI          fetchDomainURI         if  window location port length  gt  0          return window location hostname            return     window location hostname match   w    w   gi  0           Works for IP addresses with ports  e g   0 0 0 0 8000 etc  as well as complex domains like app staging example com returning  example com    allows for cross-domain Cookie setting and destroying

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Since this question asks for domain name  not host name  a correct answer should be  window location hostname split      slice -2  join        This works for host names like www example com too

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If you want the country domain name - for example to extract nbsp   com nbsp  from nbsp  stackoverflow com     ES6    const getCountryDomainName        gt      let hostName   window location hostname    let lastDotIndex   hostName lastIndexOf         let countryDomainName   hostName substr lastDotIndex 1  hostName length     return countryDomainName       ES5    function getCountryDomainName       let hostName   window location hostname    let lastDotIndex   hostName lastIndexOf         let countryDomainName   hostName substr lastDotIndex 1  hostName length     return countryDomainName      Then  just use the function to assign the value to a var   const countryDomainName   getCountryDomainName

User · Answer

for my case the best match is window location origin

User · Answer

How about   window location hostname   The location object actually has a number of attributes referring to different parts of the URL

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Let s suppose you have this url path  http   localhost 4200 landing query 1 2 So  you can serve yourself by the location values  as follow  window location hash   quot  2 quot    window location host   quot localhost 4200 quot    window location hostname   quot localhost quot    window location href   quot http   localhost 4200 landing query 1 2 quot    window location origin   quot http   localhost 4200 quot    window location pathname   quot  landing quot    window location port   quot 4200 quot    window location protocol   quot http  quot   window location search   quot  query 1 quot   Now we can conclude you re looking for  window location hostname

User · Answer

I figure it ought to be as simple as this    url split      2

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If you are not interested in the host name  for example www beta example com  but in the domain name  for example example com   this works for valid host names   function getDomainName hostName        return hostName substring hostName lastIndexOf      hostName lastIndexOf      - 1    1

User · Answer

window location hostname is a good start  But it includes sub-domains  which you probably want to remove  E g  if the hostname is www example com  you probably want just the example com bit  There are  as ever  corner cases that make this fiddly  e g  bbc co uk  The following regex works well for me   x000D   x000D  let hostname   window location hostname     remove any subdomains  e g  www example com - gt  example com let domain   hostname match               w 3        w 2 8   w 2 4    w 2 4       1   console log  domain     domain   x000D   x000D   x000D

User · Answer

Use  document write document location hostname     window location has a bunch of properties  See here for a list of them

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function getDomain url  subdomain        subdomain   subdomain    false       url   url replace   https         www    i            if   subdomain            url   url split                url   url slice url length - 2  join                  if  url indexOf          -1            return url split      0              return url      Examples   getDomain  http   www example com       example com getDomain  www example com       example com getDomain  http   blog example com   true      blog example com getDomain location href           Previous version was getting full domain  including subdomain   Now it determines the right domain depending on preference  So that when a 2nd argument is provided as true it will include the subdomain  otherwise it returns only the  main domain

User · Answer

You can get it from location object in Javascript easily   For example URL of this page is    http   www stackoverflow com questions 11401897 get-the-current-domain-name-with-javascript-not-the-path-etc   Then we can get the exact domain with following properties of location object   location host    www stackoverflow com  location protocol   http     you can make the full domain with   location protocol          location host   Which in this example returns http   www stackoverflow com   I addition of this we can get full URL and also the path with other properties of location object    location href   http   www stackoverflow com questions 11401897 get-the-current-domain-name-with-javascript-not-the-path-etc      location pathname   questions 11401897 get-the-current-domain-name-with-javascript-not-the-path-etc

User · Answer

If you wish a full domain origin  you can use this   document location origin   And if you wish to get only the domain  use can you just this   document location hostname   But you have other options  take a look at the properties in   document location

User · Answer

What about this function    window location hostname match   w    w   gi  0    This will match only the domain name regardless if its a subdomain or a main domain

User · Answer

Feel free to visit our     lt a href  javascript document location href document location origin   contact-us   title  Click to Contact Us  class  coded link   gt  lt span class  ui-icon ui-icon-newwin  gt  lt  span gt Contact lt  a gt     link   Indeed worked for me whereas I couldn t use PHP  Just tested that it worked thanks to the approach mentioned above in some of the answers  so quick and verified that worked

[javascript] Get The Current Domain Name With Javascript (Not the path, etc.)

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