JavaScript to Link with Active Directory for SharePoint Content Editor webpart

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Javascript

directory

Our Customer need a client-side script to fetech information (of the current logged-in user) from Active-directory on pageload.

I was trying with the following links. But none of these are not working.

http://idprogramming.blogspot.in/2011/06/how-to-get-user-data-from-active.html

http://sirlagz.net/2011/01/04/query-a-user-in-active-directory/

Is it possible?
If so what are the requirement for linking active directory using Java-script?

I did not get any helpful link to achieve this.