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Mixpanel JavaScript Library

The Mixpanel JavaScript Library is a set of methods attached to a global mixpanel object intended to be used by websites wishing to send data to Mixpanel projects. A full reference is available here.

Alternative installation via NPM

This library is available as a package on NPM (named mixpanel-browser to distinguish it from Mixpanel's server-side Node.js library, available on NPM as mixpanel). To install into a project using NPM with a front-end packager such as Browserify or Webpack:

npm install --save mixpanel-browser

You can then require the lib like a standard Node.js module:

var mixpanel = require('mixpanel-browser');

mixpanel.init("YOUR_TOKEN");
mixpanel.track("An event");

Alternative installation via Bower

mixpanel-js is also available via front-end package manager Bower. After installing Bower, fetch into your project's bower_components dir with:

bower install mixpanel

Using Bower to load the snippet

You can then load the lib via the embed code (snippet) with a script reference:

<script src="bower_components/mixpanel/mixpanel-jslib-snippet.min.js"></script>

which loads the latest library version from the Mixpanel CDN (http://cdn.mxpnl.com/libs/mixpanel-2-latest.min.js).

Using Bower to load the entire library

If you wish to load the specific version downloaded in your Bower package, there are two options.

  1. Override the CDN library location with the global MIXPANEL_CUSTOM_LIB_URL var:
<script>
  window.MIXPANEL_CUSTOM_LIB_URL = 'bower_components/mixpanel/mixpanel.js';
</script>
<script src="bower_components/mixpanel/mixpanel-jslib-snippet.min.js"></script>

or

  1. Recompile the snippet with a custom MIXPANEL_LIB_URL using Closure Compiler:
java -jar compiler.jar --js mixpanel-jslib-snippet.js --js_output_file mixpanel-jslib-snippet.min.js --compilation_level ADVANCED_OPTIMIZATIONS --define='MIXPANEL_LIB_URL="bower_components/mixpanel/mixpanel.js"'

Upgrading from mixpanel-bower v2.2.0 or v2.0.0

If you originally installed Mixpanel via Bower at its previous home (https://github.com/drubin/mixpanel-bower), the two old versions have remained functionally unchanged. To upgrade to v2.3.6 or later (the first Bower version in the official repo) from a previous Bower install, note the changed filenames: previous references to mixpanel.js should become mixpanel-jslib-snippet.min.js (the minified embed code), and previous references to mixpanel.dev.js should become mixpanel.js (the library source) or mixpanel.min.js (the minified library for production use).

Building bundles for release

  • Install development dependencies: npm install
  • Build: npm run build

Running tests

  • Install development dependencies: npm install
  • Start test server: npm test
  • Browse to http://localhost:3000/tests/ and choose a scenario to run

In the future we plan to automate the last step with a headless browser to streamline development (although Mixpanel production releases are tested against a large matrix of browsers and operating systems).

Thanks

For patches and support: @bohanyang, @dehau, @drubin, @D1plo1d, @feychenie, @mogstad, @pfhayes, @sandorfr, @stefansedich