Ahoy.js

:fire: Visit and event tracking for JavaScript

- Easily track unique visitors
- Track events across page navigation

Use it with any backend. For Rails, check out the Ahoy gem.


Installation

Download ahoy.js and include it on your page.

``html

`

Or use Yarn:

`sh
yarn add ahoy.js
`

And import it with:

`es6
import ahoy from 'ahoy.js';
`

How It Works

When someone lands on your website, they are assigned a visit token and a visitor token.

The visit token expires after 4 hours, in which a new visit is created. Visits are useful for tracking metrics like monthly active users. The visitor token expires after 2 years. A POST request is sent to /ahoy/visits with:

- visit_token
- visitor_token
- referrer
- landing_page

The server can capture:

- ip
- user_agent
- user - from app authentication

And calculate things like:

- referring_domain and search_keyword from referrer
- utm_source, utm_medium, utm_term, utm_content, and utm_campaign from landing_page
- city, region, and country from ip
- browser, os, and device_type from user_agent

Events

Track events with:

`javascript
ahoy.track(name, properties);
`

A POST request is sent to /ahoy/events with:

- name
- properties
- time

The server can capture:

- visit_token - from cookies
- user - from app authentication

As a precaution, the server should reject times that do not match:

`
1 minute ago < time <= now
`

$3

`javascript
ahoy.trackView();
`

Name - $view

Properties

- url - https://www.streamflip.com
- title - Streamflip
- page - /

The page defaults to the path. Set the page with:

`javascript
ahoy.configure({page: "Landing page"});
`

$3

`javascript
ahoy.trackClicks("#link1, #link2");
``

Name - $click

Properties

- tag - a
- id - account-link
- class - btn btn-primary
- page - /
- text - View Account
- href - /account

$3

`javascript
ahoy.trackSubmits("#form1, #form2");
``

Name - $submit

Properties

- tag - form
- id - form1
- class - form-inline
- page - /

$3

Deprecated

`javascript
ahoy.trackChanges("#input1, #input2");
``

Name - $change

Properties

- tag - input
- id - input1
- class - form-control
- page - /

Development

Ahoy is built with developers in mind. You can run the following code in your browser’s console.

Force a new visit

`javascript
ahoy.reset(); // then reload the page
`

Log messages

`javascript
ahoy.debug();
`

Turn off logging

`javascript
ahoy.debug(false);
`

Configuration

Here’s the default configuration:

`javascript
ahoy.configure({
urlPrefix: "",
visitsUrl: "/ahoy/visits",
eventsUrl: "/ahoy/events",
page: null,
platform: "Web",
useBeacon: true,
startOnReady: true,
trackVisits: true,
cookies: true,
cookieDomain: null,
headers: {},
visitParams: {},
withCredentials: false,
visitDuration: 4 * 60, // 4 hours
visitorDuration: 2 365 24 * 60 // 2 years
});
`

When trackVisits is set to false, Ahoy.js will not attempt to create a visit
on the server, but assumes that the server itself will return visit and visitor
cookies.

$3

To track visits across multiple subdomains, use:

`javascript
ahoy.configure({cookieDomain: "yourdomain.com"});
`

$3

Ahoy automatically associates users with visits and events if the user is authenticated on the server.

If you use cookies for authentication and the JavaScript library is on the same subdomain as the server, no additional configuration is needed.

If you use cookies and the JavaScript library is on a different domain or subdomain as the server, set:

`javascript
ahoy.configure({withCredentials: true});
`

This will send credentials such as cookies, authorization headers or TLS client certificates to the server.

If you use headers for authentication, pass them with:

`javascript
ahoy.configure({headers: {"Authorization": "Bearer ..."}});
`

$3

If you use the Fetch API to make requests and the JavaScript library is on a different domain or subdomain as the server, Ahoy cookies are not sent to the server by default. You can pass the info in headers with:

`javascript
fetch(url, {
headers: {"Ahoy-Visit": ahoy.getVisitId(), "Ahoy-Visitor": ahoy.getVisitorId()}
});
`

Upgrading

$3

The trackClicks, trackSubmits, and trackChanges functions now require selectors. The previous defaults were:

`javascript
ahoy.trackClicks("a, button, input[type=submit]");
ahoy.trackSubmits("form");
ahoy.trackChanges("input, textarea, select");
`

The trackAll function has been removed. The equivalent code is:

`javascript
ahoy.trackView();
ahoy.trackClicks("a, button, input[type=submit]");
ahoy.trackSubmits("form");
ahoy.trackChanges("input, textarea, select");
`

History

View the changelog

Contributing

Everyone is encouraged to help improve this project. Here are a few ways you can help:

- Report bugs
- Fix bugs and submit pull requests
- Write, clarify, or fix documentation
- Suggest or add new features

To get started with development:

`sh
git clone https://github.com/ankane/ahoy.js.git
cd ahoy.js
yarn install
yarn build
``