Thank you.

Warning

Production applications should not take a hard dependency on CDN assets. Applications should test for the CDN asset referenced, and use a fallback asset when the CDN is not available.

The Microsoft Ajax CDN has no SLA above and beyond using an Azure CDN.

Use this GitHub issue to report problems with the Microsoft Ajax CDN.

ajax.microsoft.com renamed to ajax.aspnetcdn.com
Visual Studio .vsdoc Support
Using ASP.NET Ajax from the CDN
Using jQuery from the CDN
Using jQuery UI from the CDN
Third-Party Files on the CDN

jQuery Releases on the CDN
jQuery Migrate Releases on the CDN
jQuery UI Releases on the CDN
jQuery Validation Releases on the CDN
jQuery Mobile Releases on the CDN
jQuery Templates Releases on the CDN
jQuery Cycle Releases on the CDN
jQuery DataTables Releases on the CDN
Modernizr Releases on the CDN
JSHint Releases on the CDN
Knockout Releases on the CDN
Globalize Releases on the CDN
Respond Releases on the CDN
Bootstrap Releases on the CDN
Bootstrap TouchCarousel Releases on the CDN
Hammer.js Releases on the CDN
ASP.NET Web Forms and Ajax Releases on the CDN
ASP.NET MVC Releases on the CDN
ASP.NET SignalR Releases on the CDN

The Microsoft Ajax Content Delivery Network (CDN) hosts popular third party JavaScript libraries such as jQuery and enables you to easily add them to your Web applications. For example, you can start using jQuery which is hosted on this CDN simply by adding a script tag to your page that points to ajax.aspnetcdn.com.

By taking advantage of the CDN, you can significantly improve the performance of your Ajax applications. The contents of the CDN are cached on servers located around the world. In addition, the CDN enables browsers to reuse cached third party JavaScript files for web sites that are located in different domains.

The CDN supports SSL (HTTPS) in case you need to serve a web page using the Secure Sockets Layer.

The CDN hosts the following third party script libraries which have been uploaded, and are licensed to you, by the owners of those libraries:

The Microsoft Ajax CDN also includes the following libraries which have been uploaded by Microsoft:

Microsoft does not claim ownership of any third-party libraries hosted on this CDN. The copyright owners of the libraries are licensing these libraries to you. Any rights that you may have to download and use such libraries are granted solely by the respective copyright owners. Because these are not Microsoft libraries, Microsoft provides no warranties or intellectual property rights licenses (including no implied patent rights) for the third party libraries hosted on this CDN.

If you wish to submit your JavaScript library and your library is one of the top JavaScript libraries (as listed on http://trends.builtwith.com) or extensions/plugins to these libraries that are (a) popular; or (b) helpful for use on ASP.NET then please contact AjaxCDNSubmission@Microsoft.com.

The CDN used to use the microsoft.com domain name and has been changed to use the aspnetcdn.com domain name. This change was made to increase performance because when a browser referenced the microsoft.com domain it would send any cookies from that domain across the wire with each request. By renaming to a domain name other than microsoft.com performance can be increased by as much to 25%. Note ajax.microsoft.com will continue to function but ajax.aspnetcdn.com is recommended.

To use the .vsdoc files properly with Visual Studio 2008 you need to make sure that you have VS 2008 SP1 installed and the hotfix for vsdoc files installed. You can get these from here:

Visual Studio 2010 supports .vsdoc files without any additional patches.

When using ASP.NET 4, you can redirect all requests for ASP.NET framework scripts to the CDN. Retrieving scripts from the CDN instead of your local web server can substantially improve the performance of public ASP.NET websites.

Use the ScriptManager EnableCDN property to redirect all ASP.NET framework script requests to the Microsoft Ajax CDN:

asp:ScriptManager    ID=ScriptManager1    EnableCdn=true    Runat=Server /

You can use jQuery scripts hosted on CDN in your Web application by adding the following script element to a page:

script src=https://ajax.aspnetcdn.com/ajax/jquery/jquery-1.9.0.js/script

The CDN also includes the minified version of the jQuery script, which you can get using the following element:

script src=https://ajax.aspnetcdn.com/ajax/jquery/jquery-1.9.0.min.js/script

To allow your page to fallback to loading jQuery from a local path on your own website if the CDN happens to be unavailable, add the following element immediately after the element referencing the CDN:

script  // Fallback to loading jQuery from a local path if the CDN is unavailable  (window.jQuery || document.write('script src=/scripts/jquery-1.9.0.min.js\/script'));/script

The following sample page uses the CDN version of the jQuery library (with fallback to a local copy) to display the contents of a div element when a button is clicked.

!DOCTYPE htmlhtml xmlns=http://www.w3.org/1999/xhtmlhead    titlejQuery from Microsoft AJAX CDN/title/headbody    button id=btnShow Message/button     div id=message style=display:none                 h1Hello from jQuery!/h1             /div     script src=https://ajax.aspnetcdn.com/ajax/jquery/jquery-1.9.0.min.js/script    script        // Fallback to loading jQuery from a local path if the CDN is unavailable        (window.jQuery || document.write('script src=/scripts/jquery-1.9.0.min.js\/script'));    /script    script                        function domReady() {            $('#btn').click( showMessage );        }                function showMessage() {            $('#message').fadeIn('slow');        }                $( domReady );    /script/body/html

You can learn more about jQuery and download a local copy of jQuery by visiting the jQuery Web site.

The CDN also hosts the jQuery UI library. The jQuery UI library includes a rich set of widgets and effects that you can use in your ASP.NET applications. For example, the following page illustrates how you can use the jQuery UI Datepicker in the context of an ASP.NET Web Forms application to display a pop-up calendar:

%@ Page Language=C# AutoEventWireup=true CodeBehind=WebForm1.aspx.cs Inherits=TestjQueryUICDN.WebForm1 %!DOCTYPE html html xmlns=http://www.w3.org/1999/xhtmlhead runat=server    titleUsing jQuery UI from the CDN/title    link rel=Stylesheet href=https://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.10/themes/redmond/jquery-ui.css //headbody    form id=form1 runat=server    div            asp:TextBox ID=txtStartDate ClientIDMode=Static runat=server /    /div    /form    script src=https://ajax.aspnetcdn.com/ajax/jquery/jquery-1.8.0.js/script    script src=https://ajax.aspnetcdn.com/ajax/jquery.ui/1.8.22/jquery-ui.js/script    script        $(#txtStartDate).datepicker();    /script/body/html

When you move focus to the TextBox using your keyboard, a calendar is displayed:

Notice that you must include three files from the CDN in the code above:

All of the standard jQuery UI themes are hosted on the CDN. Visit this page to view thumbnails for each theme.

To learn more about the jQuery UI library, visit the official jQuery UI website.

The CDN hosts some of the most popular third party JavaScript libraries. Microsoft does not claim ownership of any third-party libraries hosted on this CDN. The copyright owners of the libraries are licensing these libraries to you. Any rights that you may have to download and use such libraries are granted solely by the respective copyright owners. Because these are not Microsoft libraries, Microsoft provides no warranties or intellectual property rights licenses (including no implied patent rights) for the third party libraries hosted on this CDN.

The following releases of jQuery are hosted on the CDN:

The following releases of jQuery Migrate are hosted on the CDN:

jQuery Migrate version 1.2.0

The following releases of the jQuery UI library are hosted on this CDN. Click each link to see the actual list of files.

The following releases of the jQuery Validation plugin are hosted on this CDN. Click each link to see the actual list of files.

The following releases of the jQuery Mobile library are hosted on this CDN. Click each link to see the actual list of files.

The following releases of the jQuery Templates plugin are hosted on this CDN. Click each link to see the actual list of files.

The following releases of the jQuery Cycle plugin are hosted on this CDN. Click each link to see the actual list of files.

The following releases of the jQuery DataTables plugin are hosted on this CDN. Click each link to see the actual list of files.

The following releases of Modernizr are hosted on the CDN:

The following releases of JSHint are hosted on the CDN:

The following releases of Knockout are hosted on the CDN:

The following releases of Globalize are hosted on the CDN:

https://ajax.aspnetcdn.com/ajax/globalize/0.1.1/globalize.min.js

https://ajax.aspnetcdn.com/ajax/globalize/0.1.1/globalize.js

https://ajax.aspnetcdn.com/ajax/globalize/0.1.1/cultures/globalize.cultures.js

https://ajax.aspnetcdn.com/ajax/globalize/0.1.1/cultures/globalize.culture.{culture-code}.js

The following releases of Respond are hosted on the CDN:

The following releases of getbootstrap.com bootstrap are hosted on the CDN:

The following releases of https://github.com/ixisio/bootstrap-touch-carousel Bootstrap TouchCarousel releases are hosted on the CDN:

The following releases of http://hammerjs.github.io/ Hammer.js releases are hosted on the CDN:

The following releases of the ASP.NET Ajax Library are hosted on the CDN. Click each link to see the actual list of files.

The following ASP.NET MVC JavaScript files are hosted on this CDN:

For SignalR, we recommend a 3rd party CDN such as cdnjs or UNPKG.

The following ASP.NET SignalR JavaScript files are hosted on this CDN:

For information about the terms of use for the CDN, see Microsoft Ajax CDN Terms of Use.