The NAG does not support the use of JS tags. However, there is an additional workaround to implement these if your client wishes to track using JS tags. Note that this workaround is only applicable to DSPs on RTB Version 2.3. This includes, but is not limited to, the following DSPs:
Verizon Media DSP
The Trade Desk
Once you’ve confirmed your DSP is eligible, you can follow these steps to implement:
1) JS tags must first be converted to Sharethrough workaround pixels using the Tag Converter Tool. Paste the entire SCRIPT into the tag field, then select your desired viewability vendor and DSP.
2) The tool will generate a workaround 1x1. Please make sure this is also placed in another 1x1 impression tracking field within the DSP, same as you did with the other NAG workaround pixel. Once implemented alongside your other workaround pixel, you will be all set to track using your JS tag!