JavaScript client for the Leap Motion Controller

npm install leapjs
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Welcome to the Leap JavaScript framework. This is intended for use with the Leap (https://www.leapmotion.com/).

Build Status

For more information, please visit http://js.leapmotion.com/.

For examples, please see http://js.leapmotion.com/examples. There are also some basic examples included in the examples directory.

For info about plugins, see the wiki and the leapjs-plugins repo.


Version 0.3.0 or greater of leapjs requires version 1.0.9 or greater of the tracking software which is available at https://www.leapmotion.com/setup in order to have background support work properly. Mixing and matching prior versions will result in inconsistent background/focus support.


Add your name, email, and github account to the CONTRIBUTORS.txt list, thereby agreeing to the terms and conditions of the Contributor License Agreement.

Open a Pull Request. If your information is not in the CONTRIBUTORS file, your pull request will not be reviewed.


Details about the protocol used to communicate with leapd are detailed here PROTOCOL.md.


Some examples have been included in the examples/ directory. To run them do the following:

  1. Run npm install *
  2. Run make serve
  3. Point your browser to http://localhost:8080/examples

Or in code:

  1. Run node examples/node.js

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*Installation problems with Leap.js

You may encounter a problem with an error message including SELF_SIGNED_CERT_IN_CHAIN. This is often a result of changes in OSX's security system; try reinstalling Node.js.

If that does not work, turn off SSL checking with the following instructions:

npm config set strict-ssl=false
npm install leapjs -v0.4.1

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