EMOJIS

There are a couple of different ways to do it. An emoji is basically just text, so you can just copy and paste an emoji from somewhere like Emojipedia. You can also use the CodePoint value. Depending on where you're trying to use it, the prefix is different. Since the question is marked as JavaScript, I'll answer that. You would use the String.fromCodePoint() method, replacing the U+ with 0x. For example, to use the hamburger emoji (which has a CodePoint of U+1F354), you could write something like

console.log(String.fromCodePoint(0x1F354));

Remember that if you are just copying it and pasting it, surround it with quotes so it is treated like a string.

console.log("🍔");

There is a good article about this here.