Javascript tracker


  1. If you haven't already, go to http://rakam.io and register for an account. You will receive an API Key.
  2. On every page that uses analytics, paste the following Javascript code between the <head> and </head> tags:
<script type="text/javascript">
   (function(e,t){var n=e.rakam||{};var r=t.createElement("script");r.type="text/javascript";
   e.rakam.runQueuedFunctions()};var o=t.getElementsByTagName("script")[0];o.parentNode.insertBefore(r,o);
   function a(e,t){e[t]=function(){this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));
   return this}}var s=function(){this._q=[];return this};var i=["set","setOnce","increment","unset"];
   for(var c=0;c<i.length;c++){a(s.prototype,i[c])}n.User=s;n._q=[];var u=["init","logEvent","logInlinedEvent","setUserId","getUserId","getDeviceId","setSuperProperties","setOptOut","setVersionName","setDomain","setUserProperties","setDeviceId","onload","onEvent","startTimer"];
   for(var l=0;l<u.length;l++){a(n,u[l])}var m=["getTimeOnPreviousPage","getTimeOnPage","isReturningUser"];
   var v=(e.console?e.console.error||e.console.log:null)||function(){};var d=function(e){
   return function(){v("The method rakam."+e+"() must be called inside rakam.init callback function!");

   rakam.init("YOUR_PROJECT_WRITE_KEY", "USER_ID_HERE", { 
         includeUtm: true, 
         trackClicks: true, 
         trackForms: true, 
         includeReferrer: true 
  1. Replace YOUR PROJECT WRITE KEY with the write_key key of your project. If you know the user id (it may be e-mail, database id or any other identifier), you can pass it in USER_ID_HERE, otherwise you can just use null value.
  2. To track an event anywhere on the page, call:
  1. Events are uploaded immediately and saved to the browser's local storage until the server confirms the upload. After calling logEvent in your app, you will immediately see data appear on Rakam.

Tracking Events

It's important to think about what types of events you care about as a developer. You should aim to track between 5 and 50 types of events on your site. Common event types are actions the user initiates (such as pressing a button) and events you want the user to complete (such as filling out a form, completing a level, or making a payment). Shoot me an email if you want assistance determining what would be best for you to track.

Here is an example for a typical setup:

    includeUtm: true, 
    trackClicks: true, 
    trackForms: true, 
    includeReferrer: true 
}, function() {
    var e = document.documentElement, g = document.getElementsByTagName('body')[0],
            x = window.innerWidth || e.clientWidth || g.clientWidth,
            y = window.innerHeight|| e.clientHeight|| g.clientHeight; 

    rakam.logEvent("pageview", {url: window.location.pathname, time_on_page: rakam.getTimeOnPreviousPage(), returning_session: rakam.isReturningUser(), color_depth: window.screen.colorDepth, viewport: x + ' × ' + y, title: document.title});

rakam.setSuperProperties({platform: 'Web', _ip: true, _user_agent:true, _referrer:document.referrer, resolution: window.screen.width+" × "+window.screen.height}, true);

Setting Event Properties

You can attach additional data to any event by passing a Javascript object as the second argument to logEvent:

var eventProperties = {};
eventProperties.key = "value";
rakam.logEvent("EVENT_COLLECTION_HERE", eventProperties);

Setting User Properties

Please note that you need to call `rakam.setUserId` before setting any user property.

To add properties to a user you can use the User API.

rakam.User().set({'property': 'value'});

Currently, we have set, setOnce, increment and unset methods in User API.

Super properties

If you want to track extra attributes in all the events that are occurred for a given user, you can use super properties. They're usually handful for tracking user properties in events.

rakam.setSuperProperties({user_gender: 'male'}, replaceExisting);

Settings Custom User IDs

If your app has its own login system that you want to track users with, you can call setUserId at any time:


A user's data will be merged on the backend so that any events up to that point from the same browser will be tracked under the same user.

Event tracking based on DOM elements

Rakam has a specific method that is similar to rakam.logEvent but lets you to track events automatically by adding attributes to DOM elements. When you call rakam.logInlinedEvent method, Rakam searches all DOM elements that have rakam-event-attribute attribute and include their values to event that is collected. It also works for various elements including for elements such as SELECT, INPUT, TEXTAREA.
For example, let's say that you want to collect user search events in your website. The search page already includes data that you want to use as attributes of the event so instead of generating event properties manually and using rakam.logEvent you may set rakam-event-attribute attribute to DOM elements such as result count, category, sorting criteria etc. and call rakam.logInlinedEvent.

rakam.logInlinedEvent("EVENT_COLLECTION_NAME", extraProperties, callback);

Since all

Full example:

                <input type="search" rakam-event-attribute="query_term" value="phones">
                <span rakam-event-attribute="result_count" rakam-event-attribute-type="long">12</span>
                results found
                <span rakam-event-attribute="category">electronics</span>
                <select rakam-event-attribute="sorting_criteria">
                   <option value="relevance" selected>relevance</option>
                   <option value="name">name</option>
                   <option value="price">price</option>

It produces the following JSON that will be used as event properties:

        "project": "shop",
        "collection": "search",
        "properties": {
             "query_term": "phones",
             "result_count": 12,
             "category": "electronics",
             "sorting_criteria": "relevance"
DOM attribute description default
rakam-event-attribute The value is the event attribute name, if a DOM element doesn't have this attribute it will be ignored. null
rakam-event-attribute-type The type of the event attribute. The valid values are string, long, time (The format is 24:00:00), timestamp and date (The value must be epoch unix timestamp), double, boolean string
rakam-event-attribute-value If the attribute is present, the DOM element value will be ignored and the value of this attribute will be used. null

Tracking Clicks

If you add rakam-event-track attribute to the buttons, and enable the config trackClicks, Rakam will automatically track the clicks for you. Here is a simple example

Click here to show pets:
<button rakam-event-track="show_pets", rakam-event-properties='{"webpage": "petlist1"}'>

Tracking Forms

If trackForms option is set true, Rakam automatically track forms that have rakam-event-form attribute. When a visitor submits a form that has rakam-event-form attribute, Rakam visits all the form elements, generate event properties and send event to Rakam. If the form causes page redirection, the event will be saved in localStorage and sent after redirection. (If the form redirects to another domain and the visitor never returns to the website, the event will be lost. We may use sendBeacon API to fix this issue in the future but unfortunately there is no cross-browser version of this API).

Available options for FORM tag:

DOM attribute description default
rakam-event-form If the form that is submitted doesn't have this attribute, Rakam doesn't track it. The value will be the event collection. null
rakam-event-extra An optional attribute for forms that are tracked by Rakam. If the form that is submitted have this attribute the value will be merged with the generated event properties from the form elements. null (Must be a JSON string)

Available options for FORM elements:

DOM attribute description default
rakam-event-form-element-ignore The form element will be ignored if this is attribute is set. string

You can also use rakam-event-attribute, rakam-event-attribute-type and rakam-event-attribute-value attributes that are explained in previous section. If rakam-event-attribute is not set, the name attribute of the form element will be used as event attribute.

If the form element is an INPUT and the type is PASSWORD, it will be ignored automatically.

Here is a simple example:

<form rakam-event-form="subscribe_mail_list">
  <input type="text" name="email">
  <input type="hidden" rakam-event-extra='{"source": "website"}'>
  <input type="submit" name="Send">

When the user submits the form, the tracker will automatically send a new event with collection name subscribe_mail_list and with attributes email and source.

Event Hooks

You can add event hooks with rakam.onEvent method. The callback function will be executed when the events that are succesfully collected by the Rakam, the function parameters include the response data that is returned by the server.

This feature is useful if you use automation module or custom event mappers in your Rakam cluster. For example the automation module uses a custom header _auto_action to send client to take action in real-time. The following snippet displays an alert that includes the message that is sent from automation module to the client.

rakam.onEvent(function(status, response, headers) {
      var actions = headers['_auto_action'];
      if(actions) {
          var actions = actions.split(",");
          for(var i=0; i < actions.length; i++) {
              var action = decodeURIComponent(escape(window.atob( actions[i] )));
              // we use JQuery in this example.
              var div = $("<div/>").text(action).attr('style', 'position: fixed; bottom: 20px; right: 20px; background: #FFF8EB; border: 1px solid #FFD17E; padding: 9px; z-index: 100; box-shadow: 0 0 5px #CCCCCC; color: #9E6600;')
              setTimeout(function() {
                  div.fadeOut(300, function() { $(this).remove(); });
              }, 4000);


Rakam will automatically attach session_id attribute to each event that is unique for each session. When a new visitor visits your website, Rakam generates a unique session id for the visitor. This session id will be used in collected events for the next 30 minutes, and then the session timeouts and Rakam automatically generates a new session id. you can configure the interval of sessions with sessionTimeout option.

Miscellaneous methods

rakam.isReturningUser() returns true if the session is a returning session.


Timer calculates the actual duration that the visitor spent on your website. You can use this feature attach time_on_page metric to your events.

method description
rakam.startTimer(isSaveOnClose) Starts a timer that indicates the active duration of the visitor in the webpage. It uses ifvisible.js to find out the actual duration that visitor spent on the website. isSaveOnClose is a boolean parameter, when user closes the webpage, it saves the final duration to a cookie so that you can use rakam.getTimeOnPreviousPage() on the next page. If it's not set, the other methods is not functional.
rakam.timeOnPage() returns the current duration the user spent on the webpage.
rakam.getTimeOnPreviousPage() reads the cookie parameter that is saved Rakam Timer. If you called rakam.startTimer(true) on previous page, it will save the final duration to a cookie automatically before the visitor arrives on this page.

Opting User Out of Logging

You can turn off logging for a given user:


No events will be saved or sent to the server while opt out is enabled. The opt out
setting will persist across page loads. Calling


will re-enable logging.

Configuration Options

option description default
saveEvents If true, saves events to localStorage and removes them upon successful upload.
NOTE: Without saving events, events may be lost if the user navigates to another page before events are uploaded.
savedMaxCount Maximum number of events to save in localStorage. If more events are logged while offline, old events are removed. 1000
uploadBatchSize Maximum number of events to send to the server per request. 100
includeUtm If true, finds utm parameters in the query string or the __utmz cookie, parses, and includes them as user propeties on all events uploaded. false
includeReferrer If true, includes referrer and referring_domain as user propeties on all events uploaded. false
batchEvents If true, events are batched together and uploaded only when the number of unsent events is greater than or equal to eventUploadThreshold or after eventUploadPeriodMillis milliseconds have passed since the first unsent event was logged. false
eventUploadThreshold Minimum number of events to batch together per request if batchEvents is true. 30
eventUploadPeriodMillis Amount of time in milliseconds that the SDK waits before uploading events if batchEvents is true. 30*1000
deviceId Custom device ID to set Randomly generated UUID


This SDK automatically grabs useful data about the browser, including browser type and operating system version.

By default, no version name is set. You can specify a version name to distinguish between different versions of your site by calling setVersionName:


User IDs are automatically generated and stored in cookies if not specified.

Device IDs are generated randomly, although you can define a custom device ID setting it as a configuration option or by calling:


You can pass a callback function to logEvent, which will get called after receiving a response from the server:

rakam.logEvent("EVENT_IDENTIFIER_HERE", null, callback_function);

The status and response from the server are passed to the callback function, which you might find useful. An example of a callback function which redirects the browser to another site after a response:

  var callback_function = function(status, response) {
    if (status === 200 && response === '1') {
      // do something here

You can also pass a callback function to init, which will get called after the SDK finishes its asynchronous loading. Note: no values are passed to the init callback function:

rakam.init("YOUR_API_KEY_HERE", "USER_ID_HERE", null, callback_function);

In the case that optOut is true, then no event will be logged, but the callback will be called. In the case that batchEvents is true, if the batch requirements eventUploadThreshold and eventUploadPeriodMillis are not met when logEvent is called, then no request is sent, but the callback is still called. In these cases, the callback will be called with an input status of 0 and response 'No request sent'.

Updated 2 years ago

Javascript tracker

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