User:HectorMoffet/ShowOnlyToLoggedInUsers.js

Code that you insert on this page could contain malicious content capable of compromising your account. If you import a script from another page with "importScript", "mw.loader.load", "iusc", or "lusc", take note that this causes you to dynamically load a remote script, which could be changed by others. Editors are responsible for all edits and actions they perform, including by scripts. User scripts are not centrally supported and may malfunction or become inoperable due to software changes. A guide to help you find broken scripts is available. If you are unsure whether code you are adding to this page is safe, you can ask at the appropriate village pump.
This code will be executed when previewing this page.

Documentation for this user script can be added at User:HectorMoffet/ShowOnlyToLoggedInUsers.

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//------------------------------------------------------------------------
// To install this script, 
//
// 1)  Edit your common.js file by going to Special:MyPage/common.js
// 2)  Add the following line to that file: 
//         importScript('User:HectorMoffet/ShowOnlyToLoggedInUsers.js');
//------------------------------------------------------------------------
//
//
// ShowOnlyToLoggedInUsers.js
//
// This script will first check to see if the user is logged in.   
// If the user is logged in, 
//   the script will then show any HTML elements of the class "ShowOnlyToLoggedInUsers"
//
// Template:ShowOnlyToLoggedInUsers can be used to create such text.  

if ( mw.config.get( 'wgUserId' ) != null)  // If user is logged in
{
   // get all elements in the class 'ShowOnlyToLoggedInUsers'
   var ElementsToShow=document.getElementsByClassName('ShowOnlyToLoggedInUsers'); 
   
   // show those elements
   for(var i=0;i<ElementsToShow.length;i++) ElementsToShow[i].style.visibility="visible"; 
}