Today I learned how to display emoji characters in HTML and JS.
So with reference to the Emoji's Unicode taken here: http://unicode.org/emoji/charts/full-emoji-list.html
Which gives you: 😀
In HTML, you'll have to convert them to use this syntax:
Here's a useful tool to convert Emoji symbols into various formats: http://www.endmemo.com/unicode/unicodeconverter.php
Happy Emojing 👻