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A javascript library providing cross-browser, cross-site messaging/method invocation.
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easyXDM - easy Cross-Domain Messaging

easyXDM is a javascript library created to enable web developers to easily communicate and expose javascript API's across domain boundaries.

Some of the goals for the project are that it should

  • be easy to use!!!
  • be self contained, no dependencies (not counting JSON)
  • be light weight
  • be flexible
  • have good code quality (uses jslint etc)
  • have good documentation

The library provides three layers of abstraction that simplifies development and usage.

easyXDM.transport and its contained classes all give access to a simple string based commmunication channel. This can be used directly to send strings between the two documents. The transports does not have any dependencies outside the script itself and what the browser offers.

easyXDM.Channel wraps a Transport and uses a serializer to enable you to send Javascript objects over the transport. This offer the most when used with the HTML5 JSON object, either via the native implementation or through Douglas Crockfords json2 library.

easyXDM.Interface wraps a Channel and enables you to define exposed and consumed methods. This then allows you to call methods, with arguments, across the domain boundary and have the result returned. The underlying protocol used is quite similar to json-rpc. Since the remote end is free to use AJAX etc the Interface class can be used to easily expose AJAX in a cross-domain fashion.


There are several examples and demos at the wiki and in the documentation.


You can run the tests for the latest released version here or run the tests for the repository's master#HEAD here

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