Mirror of Apache SensSoft User Ale JS (Incubating)
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Apache SensSoft UserALE.js (Incubating)

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The official JavaScript client for Apache SensSoft UserALE.

Additional documentation can be found at http://senssoft.incubator.apache.org/userale/


Several dependencies are required, simply execute the following and you are good to go.

npm install


To build UserALE.js:

npm run build


To test UserALE.js:

npm run test

... you should eventually see something as follows

  26 passing (837ms)
  1 pending

Any failing tests will also be logged in the terminal. If there are failing tests, please consider logging an issue in JIRA.

Use and Configure

To include UserALE.js in your project:

<script src="/path/to/userale-1.0.0.min.js"></script>

HTML5 Data Parameters are used to configure UserALE.js. For example, to set the logging URL:

<script src="/path/to/userale-1.0.0.min.js" data-url="http://yourLoggingUrl"></script>

The complete list of configurable options is:

Param Description Default
data-url Logging URL http://localhost:8000
data-autostart Should UserALE.js start on page load true
data-interval Delay between transmit checks 5000 (ms)
data-threshold Minimum number of logs to send 5
data-user User identifier null
data-version Application version identifier null
data-log-details Toggle detailed logs (keys pressed and input/change values) false
data-resolution Delay between instances of high frequency logs (mouseover, scroll, etc.) 500 (ms)
data-user-from-params Query param in the page URL to fetch userId from null
data-tool Name of tool being logged null

Next Up

Our top priority is to improve the testing system and to complete test coverage. After that is complete:

  • Use web workers to remove load from main thread if available
  • Update the example server to present a simple test app/interface
  • Release UserALE.js through channels like NPM, Bower, etc.


Contributions are welcome! Simply submit an issue report for problems you encounter or a pull request for your feature or bug fix. The core team will review it and work with you to incorporate it into UserALE.js.


Apache SensSoft UserALE.js is provided under Apache License version 2.0. See LICENSE file for more details. Software as a Sensor is a trademark of the Charles Stark Draper Laboratory, Inc.