I have a couple of emoji unicodes that works well in css:
content: "\f410"
content: "\f2d1"
I tries to output it with javascript, but I failed, I will be so grateful for any suggestion you may offer.
console.log('\f410');
console.log('\Uf410');
It should be console.log('\uf410');, lower case u.
ps: and maybe you also like something like: console.log(String.fromCharCode(parseInt('f410',16))).