react-ga

React Google Analytics Module

This is a JavaScript module that can be used to include Google Analytics tracking code in a website or app that uses React for its front-end codebase. It does not currently use any React code internally, but has been written for use with a number of Mozilla Foundation websites that are using React, as a way to standardize our GA Instrumentation across projects.

It is designed to work with, Universal Analytics and will not support the older ga.js implementation.

This module is mildly opinionated in how we instrument tracking within our front-end code. Our API is slightly more verbose than the core Google Analytics library, in the hope that the code is easier to read and understand for our engineers. See examples below.

If you use react-ga too, we'd love your feedback. Feel free to file issues, ideas and pull requests against this repo.

Installation

With npm:

npm install react-ga --save

With bower:

bower install react-ga --save

Note that React >= 0.14.0 is needed in order to use the <OutboundLink> component.

Usage

With npm

Initializing GA and Tracking Pageviews:

import ReactGA from 'react-ga';
ReactGA.initialize('UA-000000-01');
ReactGA.pageview(window.location.pathname + window.location.search);

With bower

When included as a script tag, a variable ReactGA is exposed in the global scope.

<!-- The core React library -->
<script src="https://unpkg.com/[email protected]/dist/react.min.js"></script>
<!-- The ReactDOM Library -->
<script src="https://unpkg.com/[email protected]/dist/react-dom.min.js"></script>
<!-- ReactGA library -->
<script src="/path/to/bower_components/react-ga/dist/react-ga.min.js"></script>

<script>
  ReactGA.initialize('UA-000000-01', { debug: true });
</script>

Demo Code

For a working demo have a look at the demo files or clone this repo and run npm install npm start then open http://localhost:8080 and follow the instructions. Demo requires you to have your own TrackingID.

Upgrading from 1.x to 2.x

You can safely upgrade to 2.x as there are no breaking changes. The main new feature is that the underlying ga function is now exposed via the property ReactGA.ga. This can be helpful when you need a function that ReactGA doesn't support at the moment. Also, for that reason, it is recommended that you rename your imported value as ReactGA rather than ga so as to distinguish between the React GA wrapper and the original ga function.

Community Components

While some convenience components are included inside the package, some are specific to each application. A community curated list of these is available in the wiki: https://github.com/react-ga/react-ga/wiki/Community-Components. Feel free to add any you have found useful.

API

ReactGA.initialize(gaTrackingID, options)

GA must be initialized using this function before any of the other tracking functions will record any data. The values are checked and sent through to the ga('create', ... call.

If you aren't getting any data back from Page Timings, you may have to add siteSpeedSampleRate: 100 to the gaOptions object. This will send 100% of hits to Google Analytics. By default only 1% are sent.

Example

ReactGA.initialize('UA-000000-01', {
  debug: true,
  titleCase: false,
  gaOptions: {
    userId: 123
  }
});

Or with multiple trackers

ReactGA.initialize(
  [
    {
      trackingId: 'UA-000000-01',
      gaOptions: {
        name: 'tracker1',
        userId: 123
      }
    },
    {
      trackingId: 'UA-000000-02',
      gaOptions: { name: 'tracker2' }
    }
  ],
  { debug: true, alwaysSendToDefaultTracker: false }
);

Value	Notes
gaTrackingID	String. Required. GA Tracking ID like UA-000000-01.
options.debug	Boolean. Optional. If set to true, will output additional feedback to the console.
options.titleCase	Boolean. Optional. Defaults to true. If set to false, strings will not be converted to title case before sending to GA.
options.gaOptions	Object. Optional. GA configurable create only fields.
options.gaAddress	String. Optional. If you are self-hosting your analytics.js, you can specify the URL for it here.
options.alwaysSendToDefaultTracker	Boolean. Optional. Defaults to true. If set to false and using multiple trackers, the event will not be send to the default tracker.
options.testMode	Boolean. Optional. Defaults to false. Enables test mode. See here for more information.
options.standardImplementation	Boolean. Optional. Defaults to false. Enables loading GA as google expects it. See here for more information.
options.useExistingGa	Boolean. Optional. Skips call to window.ga(), assuming you have manually run it.
options.redactEmail	Boolean. Optional. Defaults to true. Enables redacting a email as the string that in "Event Category" and "Event Action".

If you are having additional troubles and setting debug = true shows as working please try using the Chrome GA Debugger Extension. This will help you figure out if your implementation is off or your GA Settings are not correct.

ReactGA.set(fieldsObject)

This will set the values of custom dimensions in Google Analytics.

Example

ReactGA.set({ dimension14: 'Sports' });

Or with multiple trackers

ReactGA.set({ userId: 123 }, ['tracker2']);

Value	Notes
fieldsObject	Object. e.g. { userId: 123 }
trackerNames	Array. Optional. A list of extra trackers to run the command on

ReactGA.pageview(path)

Example

ReactGA.pageview('/about/contact-us');

Or with multiple trackers

ReactGA.pageview('/about/contact-us', ['tracker2']);

This will send all the named trackers listed in the array parameter. The default tracker will or will not send according to the initialize() setting alwaysSendToDefaultTracker (defaults to true if not provided).

Value	Notes
path	String. e.g. '/get-involved/other-ways-to-help'
trackerNames	Array. Optional. A list of extra trackers to run the command on
title	String. Optional. e.g. 'Other Ways to Help'

See example above for use with react-router.

ReactGA.modalview(modalName)

A modal view is often an equivalent to a pageview in our UX, but without a change in URL that would record a standard GA pageview. For example, a 'contact us' modal may be accessible from any page in a site, even if we don't have a standalone 'contact us' page on its own URL. In this scenario, the modalview should be recorded using this function.

Example

ReactGA.modalview('/about/contact-us');

Value	Notes
modalName	String. E.g. 'login', 'read-terms-and-conditions'

ReactGA.event(args)

Tracking in-page event interactions is key to understanding the use of any interactive web property. This is how we record user interactions that don't trigger a change in URL.

Examples

ReactGA.event({
  category: 'User',
  action: 'Created an Account'
});

ReactGA.event({
  category: 'Social',
  action: 'Rated an App',
  value: 3
});

ReactGA.event({
  category: 'Editing',
  action: 'Deleted Component',
  label: 'Game Widget'
});

ReactGA.event({
  category: 'Promotion',
  action: 'Displayed Promotional Widget',
  label: 'Homepage Thing',
  nonInteraction: true
});

Value	Notes
args.category	String. Required. A top level category for these events. E.g. 'User', 'Navigation', 'App Editing', etc.
args.action	String. Required. A description of the behaviour. E.g. 'Clicked Delete', 'Added a component', 'Deleted account', etc.
args.label	String. Optional. More precise labelling of the related action. E.g. alongside the 'Added a component' action, we could add the name of a component as the label. E.g. 'Survey', 'Heading', 'Button', etc.
args.value	Int. Optional. A means of recording a numerical value against an event. E.g. a rating, a score, etc.
args.nonInteraction	Boolean. Optional. If an event is not triggered by a user interaction, but instead by our code (e.g. on page load), it should be flagged as a nonInteraction event to avoid skewing bounce rate data.
args.transport	String. Optional. This specifies the transport mechanism with which hits will be sent. Valid values include 'beacon', 'xhr', or 'image'.

ReactGA.timing(args)

Allow to measure periods of time such as AJAX requests and resources loading by sending hits using the analytics.js library. For more detailed description, please refer to https://developers.google.com/analytics/devguides/collection/analyticsjs/user-timings.

Example

Usage:

ReactGA.timing({
  category: 'JS Libraries',
  variable: 'load',
  value: 20, // in milliseconds
  label: 'CDN libs'
});

This is equivalent to the following Google Analytics command:

ga('send', 'timing', 'JS Libraries', 'load', 20, 'CDN libs');

Value	Notes
args.category	String. Required. A string for categorizing all user timing variables into logical groups.
args.variable	String. Required. Name of the variable being recorded.
args.value	Int. Required. Number of milliseconds elapsed time to report.
args.label	String. Optional. It can be used to add flexibility in visualizing user timings in the reports.

ReactGA.ga()

The original ga function can be accessed via this method. This gives developers the flexibility of directly using ga.js features that have not yet been implemented in ReactGA. No validations will be done by ReactGA as it is being bypassed if this approach is used.

If no arguments are passed to ReactGA.ga(), the ga object is returned instead.

Example

Usage with arguments:

ReactGA.ga('send', 'pageview', '/mypage');

Usage without arguments:

var ga = ReactGA.ga();
ga('send', 'pageview', '/mypage');

ReactGA.outboundLink(args, hitCallback)

Tracking links out to external URLs (including id.webmaker.org for OAuth 2.0 login flow). A declarative approach is found in the next section, by using an <OutboundLink> component.

Example

ReactGA.outboundLink(
  {
    label: 'Clicked Create an Account'
  },
  function () {
    console.log('redirect here');
  },
  ['tracker2']
);

Value	Notes
args.label	String. Required. Description of where the outbound link points to. Either as a URL, or a string.
hitCallback	function. The react-ga implementation accounts for the possibility that GA servers are down, or GA is blocked, by using a fallback 250ms timeout. See notes in GA Dev Guide
trackerNames	Array<String> Optional. A list of extra trackers to run the command on.

<OutboundLink> Component

Outbound links can directly be used as a component in your React code and the event label will be sent directly to ReactGA.

Example

var ReactGA = require('react-ga');

render() {
  return (
    <div>
      <ReactGA.OutboundLink
        eventLabel="myLabel"
        to="http://www.example.com"
        target="_blank"
        trackerNames={['tracker2']}
      >
        My Link
      </ReactGA.OutboundLink>
    </div>
  );
}

Value	Notes
eventLabel	String. Required. Description of where the outbound link points to. Either as a URL, or a string.
to	String. Required. URL the link leads to.
target	String. Optional. To open the link in a new tab, use a value of _blank.
trackerNames	Array<String> Optional. A list of extra trackers to run the command on.

For bower, use the <ReactGA.OutboundLink> component.

ReactGA.exception(args)

GA exception tracking

Example

ReactGA.exception({
  description: 'An error ocurred',
  fatal: true
});

Value	Notes
args.description	String. Optional. Description of what happened.
args.fatal	boolean. Optional. Set to true if it was a fatal exception.

ReactGA.plugin.require(name, [options])

Require GA plugins.

Example

ReactGA.plugin.require('localHitSender', { path: '/log', debug: true });

Value	Notes
name	String. Required. The name of the plugin to be required. Note: if the plugin is not an official analytics.js plugin, it must be provided elsewhere on the page.
options	Object. Optional. An initialization object that will be passed to the plugin constructor upon instantiation.

ReactGA.plugin.execute(pluginName, action, [actionType], [payload])

Execute the action for the pluginName with the payload.

Example

ReactGA.plugin.execute('ecommerce', 'addTransaction', {
  id: 'jd38je31j',
  revenue: '3.50'
});

You can use this function with four arguments to pass actionType and payload along with executed action

Example

ReactGA.plugin.execute('ec', 'setAction', 'purchase', {
  id: 'jd38je31j',
  revenue: '3.50'
});

Test Mode

To enable test mode, initialize ReactGA with the testMode: true option. Here's an example from tests/utils/testMode.test.js

// This should be part of your setup
ReactGA.initialize('foo', { testMode: true });
// This would be in the component/js you are testing
ReactGA.ga('send', 'pageview', '/mypage');
// This would be how you check that the calls are made correctly
expect(ReactGA.testModeAPI.calls).toEqual([
  ['create', 'foo', 'auto'],
  ['send', 'pageview', '/mypage']
]);

Standard Implementation

To enable standard implemention of google analytics.

Add this script to your html

<!-- Google Analytics -->
<script>
  (function (i, s, o, g, r, a, m) {
    i['GoogleAnalyticsObject'] = r;
    (i[r] =
      i[r] ||
      function () {
        (i[r].q = i[r].q || []).push(arguments);
      }),
      (i[r].l = 1 * new Date());
    (a = s.createElement(o)), (m = s.getElementsByTagName(o)[0]);
    a.async = 1;
    a.src = g;
    m.parentNode.insertBefore(a, m);
  })(
    window,
    document,
    'script',
    '<%=htmlWebpackPlugin.options.analyticsURL%>',
    'ga'
  );
  ga('create', 'UA-XXX-X', 'auto');
  ga('send', 'pageview');
</script>
<!-- End Google Analytics -->

Initialize ReactGA with standardImplementation: true option.

// This should be part of your setup
ReactGA.initialize('UA-XXX-X', { standardImplementation: true });

---

Development

Prerequisites

• node.js
• npm
• npm install
• npm install react@^15.6.1 prop-types@^15.5.10 - This is for the optional dependencies.

To Test

npm test

Submitting changes/fixes

Follow instructions inside CONTRIBUTING.md

---

Acknowledgements

• Quite a lot of the code in this repo, came from webmaker-analytics.