https://github.com/Sjord/messpostage
PostMessage extension
https://github.com/Sjord/messpostage
browser-extension postmessage
Last synced: 5 months ago
JSON representation
PostMessage extension
- Host: GitHub
- URL: https://github.com/Sjord/messpostage
- Owner: Sjord
- License: mit
- Created: 2018-02-15T09:12:15.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2019-08-28T11:40:46.000Z (almost 6 years ago)
- Last Synced: 2025-01-09T19:43:30.117Z (5 months ago)
- Topics: browser-extension, postmessage
- Language: JavaScript
- Homepage:
- Size: 82 KB
- Stars: 95
- Watchers: 5
- Forks: 17
- Open Issues: 0
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Metadata Files:
- Readme: README.md
- License: LICENSE
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README
## MessPostage
Notifies you if a site uses the [postMessage API](https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage). You can install this extension from [its Firefox Add-On page](https://addons.mozilla.org/en-US/firefox/addon/messpostage/).
This extension puts a little envelope in your toolbar. As soon as the site you are visiting adds a message event listener or posts a message, it becomes red:
Clicking this button will shows which messages were sent and where event listeners have been added:
![]()