Home / Community & Support / Code Library / ASP.NET and ASP.NET AJAX > General and Integration Projects > Disable Backspace from master page

• Ray Merckel

  Posted on Apr 5, 2010 (permalink)

  Requirements
  RadControls version 2009.3.1314.35	all
  .NET version 3.5	all
  Visual Studio version	all
  programming language	JavaScript
  browser support	all browsers supported by RadControls

  
  PROJECT DESCRIPTION
  JavaScript to disable backspace from master page except in textbox, datetime, or textarea...
  
  

  <script type="text/javascript">

      function killBackSpace(e) {

          e = e ? e : window.event;

          var t = e.target ? e.target : e.srcElement ? e.srcElement : null;

          if (t && t.tagName && (t.type && /(password)|(text)|(file)/.test(t.type.toLowerCase())) || t.tagName.toLowerCase() == 'textarea')

              return true;

          var k = e.keyCode ? e.keyCode : e.which ? e.which : null;

          if (k == 8) {

              if (e.preventDefault)

                  e.preventDefault();

              return false;

          };

          return true;

      };

   

      if (typeof document.addEventListener != 'undefined')

          document.addEventListener('keydown', killBackSpace, false);

      else if (typeof document.attachEvent != 'undefined')

          document.attachEvent('onkeydown', killBackSpace);

      else {

          if (document.onkeydown != null) {

              var oldOnkeydown = document.onkeydown;

              document.onkeydown = function(e) {

              oldOnkeydown(e);

              killBackSpace(e);

              };

          }

   

          else

              document.onkeydown = killBackSpace;

      }

  </script>

  
  

  Reply

• Rumen Rumen

  Posted on Apr 7, 2010 (permalink)

  Hi Ray,
  
  Thank you for sharing this code snippet with the community.
  
  Despite that is not directly related to RadControls for ASP.NET AJAX controls, I decided to post it since it could be helpful in scenarios when using the Telerik controls.
  
  I also updated your Telerik points for your contribution.
  
  Greetings,
  Rumen
  the Telerik team

  
  Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

  Reply

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