vmap

VMAP Javascript Library

Parse a VMAP XML document to Javascript object. Complies with VMAP 1.0.1 spec.

Installation

Install with npm

npm install vmap

Usage

Provide the VMAP constructor an XML in order to have a parsed version of it.

Access VMAP properties using the APIs documented below.

import VMAP from 'vmap';

// Fetch VMAP as XML
const xhr = new XMLHttpRequest();
xhr.open('GET', vmapURL);
xhr.send();
xhr.onreadystatechange = function() {
    if (xhr.readyState === xhr.DONE) {
        if (xhr.status === 200) {
            // Get a parsed VMAP object
            const vmap = new VMAP(xhr.responseXML);
        }
    }
};

API

VMAP

Properties

• version: The VMAP version (should be 1.0).
• adBreaks: An array of VMAPAdBreak objects.
• extensions: An array of Object with
  • children: Object containing all this extension children and their name as the key
  • attribute: Object containing all this extension attributes and their name as the key
  • value: Object parsed from CDATA or as a fallback all of the text nodes of this extension concatenated

VMAPAdBreak

Provides information about an ad break.

Properties

• timeOffset: Represents the timing of the ad break.
• breakType: Identifies whether the ad break allows "linear", "nonlinear" or "display" ads.
• breakId: An optional string identifier for the ad break.
• repeatAfter: An option used to distribute ad breaks equally spaced apart from one another along a linear timeline.
• adSource: A VMAPAdSource object.
• trackingEvents: An array of Object with tracking URLs
  • event: The name of the event to track for the element. Can be one of breakStart, breakEnd or error.
  • uri: The URI of the tracker.
• extensions: An array of Object with
  • children: Object containing all this extension children and their name as the key
  • attribute: Object containing all this extension attributes and their name as the key
  • value: Object parsed from CDATA or as a fallback all of the text nodes of this extension concatenated

Methods

• track(event, errorCode): Call the trackers for the given event with an option error code parameter for error events.

VMAPAdSource

Provides the player with either an inline ad response or a reference to an ad response.

Properties

• id: Ad identifier for the ad source.
• allowMultipleAds: Indicates whether a VAST ad pod or multple buffet of ads can be served into an ad break.
• followRedirects: Indicates whether the video player should honor the redirects within an ad response.
• vastAdData: Contains an embedded VAST response.
• adTagURI: Contains a URI to the VAST.
• customData: Contains custom ad data.

Support and compatibility

The library is 100% written in JavaScript and the source code uses modern features like modules, classes, ecc... . Make sure your environment supports these features, or transpile the library when bundling your project.

Pre-bundled versions

We provide several pre-bundled versions of the library (see dist directory)

Browser

A pre-bundled version of VMAP-jsis available: vmap-js.js.

You can add the script directly to your page and access the library through the VMAP constructor.

<script src="dist/vmap-js.js"></script>

var vmap = new VMAP(vmapXML);

Node

A pre-bundled version for node is available too: vmap-js-node.js.

const VMAP = require('vmap')

const vmap = new VMAP(vmapXML);

Build and tests

Install dependencies with:

npm install

The project is bundled using Rollup. Build with:

npm run-script build

Run tests with:

npm test