I am looking into VAST advertisement and I understand the implementation except on thing, there are the tracking URI’s that has to be executed, how exactly it is done with javascript, I could not find any reference about it for example below is an excerpt from a VAST XML file
<TrackingEvents>
<Tracking event="midpoint"><![CDATA[http://example.com/linear-midpoint]]></Tracking>
<Tracking event="complete"><![CDATA[http://example.com/linear-complete]]></Tracking>
<Tracking event="start"><![CDATA[http://example.com/linear-start]]></Tracking>
<Tracking event="firstQuartile"><![CDATA[http://example.com/linear-firstQuartile]]></Tracking>
<Tracking event="close"><![CDATA[http://example.com/linear-close]]></Tracking>
<Tracking event="thirdQuartile"><![CDATA[http://example.com/linear-thirdQuartile]]></Tracking>
<Tracking event="progress" offset="00:00:30.000"><![CDATA[http://example.com/linear-progress-30sec]]></Tracking>
<Tracking event="progress" offset="60%"><![CDATA[http://example.com/linear-progress-60%]]></Tracking>
</TrackingEvents>
How exactly for example this URI “http://example.com/linear-midpoint” is executed with javascript. Any help is appreciated.
Thank you.