Google still recommends you avoid using JavaScript for canonical tags but if you must, Google provided these recommendations.

If you want to disable JavaScript from running in Mozilla Firefox, then you need to change this hidden setting. JavaScript can be a security risk!

For instance, the database reportedly contains 17,137 documents from Amazon, 6,405 from Apple, 137,285 from Citi, 32,153 from Google and 2,390 from Microsoft.