Match Emojis with Regular Expressions
When experimenting with unicode property escapes, to identify accented letters in strings, it reminded me of a question I had a few years ago: what is the best way to identify and then replace emojis in a string? I first noticed this practice when using emojis in Facebook -- sometimes Facebook would replace an emoji with one of their own custom images, likely because another device may not support that emoji.
Much the way you can match accented characters, you can use unicode property escapes to match emojis:
const emojis = "😂😂💯".match(/\p{Emoji_Presentation}/gu);
// ["😂", "😂", "💯"]
I've previously seen massive arrays of every emoji ever created, and it may be possible that {Emoji_Presentation} doesn't contain all emojis across all devices, but this regex has matched every case I've come across.
Happy emoji....ing!
![Detect DOM Node Insertions with JavaScript and CSS Animations]()
I work with an awesome cast of developers at Mozilla, and one of them in Daniel Buchner. Daniel's shared with me an awesome strategy for detecting when nodes have been injected into a parent node without using the deprecated DOM Events API.
![Serving Fonts from CDN]()
For maximum performance, we all know we must put our assets on CDN (another domain). Along with those assets are custom web fonts. Unfortunately custom web fonts via CDN (or any cross-domain font request) don't work in Firefox or Internet Explorer (correctly so, by spec) though...
![Sara Soueidan’s Favorite CodePen Demos]()
A few months ago, Chris Coyier shared his favorite CodePen demos right here on David's blog. A while back David asked me to share some of my favorite pens too, so here are some of the demos that have blown my mind in the past...
![Image Manipulation with PHP and the GD Library]()
Yeah, I'm a Photoshop wizard. I rock the selection tool. I crop like a farmer. I dominate the bucket tool. Hell, I even went as far as wielding the wizard wand selection tool once.
...OK I'm rubbish when it comes to Photoshop.
Great stuff!
But actually there are quite a few where
Emoji_Presentationdoes not work. Probably most of (all?) marked here as not Emoji_Presentation https://www.unicode.org/Public/UCD/latest/ucd/emoji/emoji-data.txt but Extended_Pictographic or just Emoji..match(/\p{Emoji}/gu);work too well (matching 1-9, # and *) but
.match(/(\p{Emoji_Presentation}|\p{Extended_Pictographic})/gu)seems to do the charm :)