mPulse.js

The mPulse JavaScript API (mpulse.js) allows you to send beacons from JavaScript to Akamai mPulse via the mPulse Beacon API.

Quick-Start

mpulse.js is available from the Akamai/mpulse.js Github repository.

The un-minified version is available at :

dist/mpulse.js

There is a minified version available at:

dist/mpulse.min.js

Please include the script in your web app prior to its use:

<script src="mpulse.js"></script>

mpulse.js is also available via bower. You can install using:

bower install mpulse

Usage

Once mpulse.js is loaded, there is a global mPulse object available on window.mPulse.

mpulse.js also registers itself as a RequireJS module.

For information on how to obtain the REST API Secret Key, go to [mPulse setup] (https://community.akamai.com/docs/DOC-8511).

To start working with the API, you first need to configure it with your API key and REST API Secret Key:

var mPulseApp = mPulse.init("api-key", "rest-api-secret-key");

After init() has been called, you can either interact with it via the returned object or via the same methods on the core mPulse object:

mPulseApp.sendTimer("My Timer", 100);
// or
window.mPulse.sendTimer("My Timer", 100);

Cordova Usage

For mPulse to work on Cordova, you need to make the following changes in your application:

In your index.html you need to extend the Content-Security-Policy to support HTTP requests to the mPulse servers:

<meta http-equiv="Content-Security-Policy" content="img-src https://*.akstat.io; connect-src https://*.akstat.io https://*.go-mpulse.net;">

Explanation of individual rules:

• img-src https://*.akstat.io: Boomerang will send GET requests with beacon data to a host in the akstat.io domain using dynamically created IMG elements over HTTPS.

• connect-src https://*.akstat.io: Boomerang will send POST requests with beacon data using XHR or the sendBeacon API to a host in the akstat.io domain over HTTPS.

• connect-src https://*.go-mpulse.net: Boomerang will fetch it's configuration from *.go-mpulse.net using XHR over HTTPS.

Include mpulse.js in your applications body as a script:

<script type="text/javascript" src="js/mpulse.min.js"></script>

Initializing mPulse in your application

In your application initialization, you need to add the following lines:

// The mpulse.js instance to use later on
var mPulseInstance = null;

// Your application specific API credentials
var APIKEY = "YOUR API KEY";
var REST_API_SECRET = "YOUR REST API SECRET";

// The start of your application
var app = {
  // Your application initialization
  initialize: function() {
    mPulseInstance = mPulse.init(APIKEY, REST_API_SECRET);
    // The rest of your application initialization
    this.bindEvents();
  },
  // Bind your application events
  bindEvents: function() {
    document.addEventListener('deviceready', this.onDeviceReady, false);
  },

  onDeviceReady: function() {
    // example mPulse.js instance interaction
    mPulseInstance.sendTimer("deviceReady", deviceReadyTime - deviceInitTime);
  },
};
app.initialize();

API Reference

Initialization

mPulse.init(apiKey, restApiSecretKey, options)

Parameters

• apiKey (String) mPulse API key
• restApiSecretKey (String) mPulse REST API Secret Key
• options (Object) Additional options

Returns

A reference to the mPulse app.

Example

var mPulseApp = mPulse.init("api-key", "rest-api-secret-key");

Custom Timers

mPulse.startTimer(name)

Starts a timer with the specified name. Use stopTimer(id) to stop and send the timer.

Parameters

• name (String) Custom Timer name

Returns

An id (string) that you can use with stopTimer(id).

Example

var timerId = mPulse.startTimer("My Timer");
// ... do stuff ...
mPulse.stopTimer(timerId);

stopTimer(id)

Stops a timer previously started via startTimer().

Parameters

• id (String) Timer ID from startTimer()

Returns

The number of milliseconds that the timer ran.

Example

var timerId = mPulse.startTimer("My Timer");
// ... do stuff ...
mPulse.stopTimer(timerId);

sendTimer(name, value)

Sends a timer with the specified name and value.

Parameters

• name (String) Custom Timer name
• value (Number) Time (milliseconds)

Returns

The number of milliseconds that the timer ran.

Example

mPulse.sendTimer("My Timer", 100);

Custom Metrics

sendMetric(name, value)

Sends a Custom Metric with the specified value.

Parameters

• name (String) Custom Metric name
• value (Number) Custom Metric value

Example

mPulse.sendMetric("My Metric", 2);

Page Group

setPageGroup(pageGroup)

Set the Page Group. All subsequent beacons will have this page group. It can be later cleared via resetPageGroup().

Parameters

• pageGroup (String) Page Group name

Example

mPulse.setPageGroup("My Page Group");

getPageGroup()

Gets the current Page Group.

Returns

The current Page Group, or false if one was not set.

Example

var pg = mPulse.getPageGroup();

resetPageGroup()

Resets (clears) the Page Group.

Example

mPulse.resetPageGroup();

A/B Test

setABTest(bucket)

Set the A/B bucket. All subsequent beacons will have this bucket. It can be later cleared via resetABTest().

Parameters

• bucket (String) A/B bucket

Example

mPulse.setABTest("A");

getABTest()

Gets the A/B bucket.

Returns

The current A/B Test, or false if one was not set.

Example

var abTest = mPulse.getABTest();

resetABTest()

Resets (clears) the A/B bucket.

Example

mPulse.resetABTest();

Custom Dimensions

setDimension(name, value)

Set the Custom Dimension. All subsequent beacons will have this Custom Dimension. It can be later cleared via resetDimension().

Parameters

• name (String) Custom Dimension name
• value (String) Custom Dimension value

Example

mPulse.setDimension("My Dimension", "abc");

resetDimension(name)

Resets (clears) a Custom Dimension.

Parameters

• name (String) Custom Dimension name

Example

mPulse.resetDimension(name);

Session

setSessionID(id)

Set the Session ID.

Parameters

• id (String) Session ID

Example

mPulse.setSessionID("ABC-123");

getSessionID()

Gets the current Session ID.

Returns

The current Session ID, or false if it was not set.

Example

var sid = mPulse.getSessionID();

startSession(id)

Starts a new Session and sets the Session Length to 0.

Parameters

• id (String) Session ID (optional). If not specified, a new UUID is used.

Returns

The new Session ID.

Example

var sid = mPulse.startSession();
// or
var sid = mPulse.startSession("MY-SID");

incrementSessionLength()

Increment the Session Length by one.

Example

mPulse.startSession();
mPulse.incrementSessionLength();

setSessionLength(len)

Sets the Session Length to the specified value.

Parameters

• len (Number) Session length

Example

mPulse.startSession();
mPulse.setSessionLength(2);

getSessionLength()

Gets the Session Length.

Returns

The Session Length.

Example

mPulse.startSession();

mPulse.setSessionLength(2);

// should be 2
var sl = mPulse.getSessionLength();

getSessionStart()

Gets the Session Start.

Returns

The Session Start.

Example

mPulse.startSession();

var st = mPulse.getSessionStart();

setSessionStart()

Sets the Session Start.

Example

mPulse.startSession();

mPulse.setSessionStart(Date.now());

transferBoomerangSession()

Transfers the Session details from Boomerang (BOOMR) into mpulse.js.

This will transfer the Session ID, Start and Length from Boomerang, if it's already on the page.

Returns

true on success.

Example

mPulse.transferBoomerangSession();

Misc

subscribe(event, callback)

Subscribe to events.

Available events:

• before_beacon - Before a beacon is sent
• beacon - After a beacon has been sent

Parameters

• event (String) Event name
• callback (Function) Function to run when the event occurs

Example

mPulse.subscribe("beacon", function() {
    console.log("A beacon was sent!");
});

Examples

Sending a custom timer

// initialize the app
mPulse.init("abcd-efgh-ijkl-mnop-qrst", "secret-key");

// set global settings
mPulse.setPageGroup("my page group");
mPulse.setABTest("my bucket");

// start the timer
var timerId = mPulse.startTimer("Timer1");

// ... do your work ...

// stop the timer
mPulse.stopTimer(timerId); // sends a beacon

// or, you can specify the amount of time
mPulse.sendTimer("Timer2", 500); // in ms

Version History

• v0.0.1 - May 26, 2015
  • Initial release
• v0.0.2 - September 10, 2015:
  • Added support for A/B tests: setABTest(), getABTest() and resetABTest() functions added
  • BREAKING Change: setViewGroup() was changed to setPageGroup(). resetViewGroup() was changed to resetPageGroup()
  • Added getPageGroup()
• v1.0.0 - March 14, 2016
  • Updated to mPulse Beacon API v2
• v1.0.1 - April 13, 2016
  • console.warn() when using a Custom Timer, Metric or Dimension that doesn't exist
  • console.warn() if you don't specify the REST API Secret Key on init()
• v1.0.2 - July 11, 2016
  • Fix for IE 9 / XDomainRequest
• v1.1.0 - June 1, 2017
  • Fix for session start time
  • Set rt.tstart and rt.end on the beacon instead of when
  • New session start functions: .setSessionStart(), .getSessionStart()
  • New function to transfer Boomerang sessions: .transferBoomerangSession()
• v1.2.0 - July 19, 2018
  • Adds support for Appcelerator Titanium
• v1.3.0 - November 12, 2019
  • Exports sendBeacon
  • Optionally specify the User-Agent for the beacon
• v1.3.1 - November 18, 2019
  • Optionally specify the User-Agent for the config.json fetch
• v1.3.2 - November 18, 2019
  • Switched node-XMLHttpRequest dependency to fix https://github.com/driverdan/node-XMLHttpRequest/pull/128 so User-Agent header is set
• v1.3.4 - March 4, 2020
  • Updated to [email protected]
• v1.3.5 - April 16, 2020
  • mpulse.js will pause sending beacons when the app is rate limited
  • mPulse.isInitialized() function added
• v1.3.6 - July 9, 2021
  • User-Agent header is no longer set in the browser
• v1.3.7 - August 23, 2024
  • crypto-js NPM package updated
• v1.3.8 - July 29, 2025
  • Use Fetch API instead of node-XMLHttpRequest