OpenAdViewability

This JavaScript SDK is an open source version to track viewability metric for any ad element based on the MRC Viewability guidelines - http://mediaratingcouncil.org/081815%20Viewable%20Ad%20Impression%20Guideline_v2.0_Final.pdf. This implementation is extended from OpenVV - https://github.com/InteractiveAdvertisingBureau/openvv and developed by AdsNative. The purpose of this SDK vs. OpenVV is to provide an ability to track viewability of an ad element as a whole instead for just video ads.

Features

According to MRC guidelines it tracks the viewability of an ad if the ad is at least 50% viewable for at least for 1 second.
If the ad unit is larger than 242,500 pixel area then it considers only at least 30% ad viewable for at least for 1 second.
Unlike OpenVV it doesn't require Flash support from the browser. It tracks the viewability across all web browser platforms.
It tracks viewability even if the ad element is within the friendly-iframe.

Note: It does not track 'Viewable Video Impression'. It only tracks viewable impressions for the ad element as a whole.

oav = new OpenAdViewability();
oav.checkViewability(ad_element, function(check){
  if(check.viewabilityStatus){
    // Your code here
  }
});