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wtf is easyxdm?

abernix/easyxdm — explained in plain English

Analysis updated 2026-07-18 · repo last pushed 2011-06-07

JavaScriptAudience · developerComplexity · 3/5DormantSetup · easy

TL;DR

easyXDM is a JavaScript library that lets web pages on different domains safely send messages and call functions across iframes, working around browser cross-domain restrictions.

Mindmap

mindmap
  root((repo))
    What it does
      Cross-domain messaging
      Iframe communication
      Works around browser limits
    Tech stack
      JavaScript
      postMessage API
      Flash fallback
    Use cases
      Embeddable widgets
      Analytics trackers
      Cross-domain AJAX
    Tools
      Socket messaging
      Rpc function calls
      CORS helper

Code map

Detail Auto

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filefunction / class

Why would anyone build with this?

REASON 1

Let an embedded iframe widget securely send data back to its home server on a different domain.

REASON 2

Expose JavaScript functions on one domain and call them like methods from another domain via Rpc.

REASON 3

Build an analytics or tracking script that customers embed on their own site's pages.

REASON 4

Make cross-domain AJAX calls through the library's built-in CORS helper.

What's in the stack?

JavaScript

How it stacks up

abernix/easyxdm3rd-eden/ircb.ioa15n/a15n
LanguageJavaScriptJavaScriptJavaScript
Last pushed2011-06-072016-11-162019-04-07
MaintenanceDormantDormantDormant
Setup difficultyeasyeasyeasy
Complexity3/52/52/5
Audiencedeveloperdevelopergeneral

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 30min

Includes legacy fallbacks (Flash, URL hash) for old browsers like IE6/7.

No license information is mentioned in the explanation.

Yoink these prompts

Prompt 1
Show me how to set up easyXDM's Socket tool to send a message from a parent page to an iframe on a different domain.
Prompt 2
Walk me through using easyXDM's Rpc feature to call a function defined in an iframe from the parent page.
Prompt 3
Explain how easyXDM automatically falls back to older browser communication methods when postMessage isn't available.
Prompt 4
Help me build an embeddable widget using easyXDM that reports data back to my server from a customer's website.

Frequently asked questions

wtf is easyxdm?

easyXDM is a JavaScript library that lets web pages on different domains safely send messages and call functions across iframes, working around browser cross-domain restrictions.

What language is easyxdm written in?

Mainly JavaScript. The stack also includes JavaScript.

Is easyxdm actively maintained?

Dormant — no commits in 2+ years (last push 2011-06-07).

What license does easyxdm use?

No license information is mentioned in the explanation.

How hard is easyxdm to set up?

Setup difficulty is rated easy, with roughly 30min to a first successful run.

Who is easyxdm for?

Mainly developer.

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