JS/jQuery Check if on root web of root sitecollection

Question

How is it possible to check in JS/jQuery if the user is on the root site of the root sitecollection in the webapplication? (Sharepoint 2010)

Thanks!

Example:

• http://www.mysite.com/Pages/Whatever.aspx -> ROOT WEB & ROOT SITECOLLECTION
• http://www.mysite.com/subsite/Pages/Test.aspx -> NOT ROOT WEB & ROOT SITECOLLECTION
• http://www.mysite.com/sites/Random/Pages/Awesome.aspx -> ROOT WEB & NOT ROOT SITECOLLECTION
• http://www.mysite.com/sites/Random/subsite/Pages/Awesome.aspx -> NOT ROOT WEB & NOT ROOT SITECOLLECTION

Answer 1

You can use ECMAScript to achieve it.

var clientContext = new SP.ClientContext();
this.oWebsite = clientContext.get_site.get_rootWeb(); //always return the root web of the site collection

See some examples here.

Answer 2

You can use the _spPageContextInfo global object in SharePoint JavaScript: http://blog.tedpattison.net/Lists/Posts/Post.aspx?ID=9

The _spPageContextInfo.webServerRelativeUrl value will always be "/" if you are on the root site.

Answer 3

I like @Vardhaman Deshpande's answer. But as I understand the question, we must check if it is on the rootweb (root site) in a site collection. A site collection can have different url than "/". But using _spPageContextInfo is absolutely right. So in javascript, to determine if it is a root web or not:

var siteUrl = _spPageContextInfo.siteServerRelativeUrl;
var webUrl = _spPageContextInfo.webServerRelativeUrl;
var isRootWeb = siteUrl == webUrl;

Answer 4

I've solved this by adding a usercontrol to the masterpage where I check the current url. If it passes as rootweb from sitecollection, then I use the scriptmanager to write a clientscriptblock into the page. I guess using a webservice was also a possibility, but the fastest way for me was this one...

Answer 5

If you had to do it client side, you could check the L_Menu_BaseUrl variable. If it's blank you're on a root site.