Well! I suppose we are at an impasse! Jokes aside, pretty much no client side javascript allows this restriction. Its a tale as old as view source. My mantra

Well! I suppose we are at an impasse! Jokes aside, pretty much no client side javascript allows this restriction. Its a tale as old as view source. My mantra is “do things worth suing over”. Prideful restrictive in line comments don't pass that bar for me.