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I want to replace all the emoji in a string with an icon. I successfully replaced these: {:) :D :P :3 <3 XP .... etc} to icons, so if the user writes :) in a string, it will be replaced with an icon.
But I have a problem: what if user directly pastes the Unicode 😊 which is equal to :)?
What I need: How can I change the Unicode icon to JavaScript regular expressions something like \ud800-\udbff. I have many emoji, so I need an idea about converting them, and after converting them, I want to match them with regular expressions.
Example: 😁wew😁
Change those emoji to \uD83D\uDE01|\uD83D\uDE4F|. I don't know how to change them, so I need to know how to change any emoji to those characters.
217
As mentioned in other answers, JavaScript regexes have no support for Unicode character classes.
To match a specific Unicode code point, use \uFFFF where FFFF is the hexadecimal number of the code point you want to match. You must always specify 4 hexadecimal digits E.g. \u00E0 matches à, but only when encoded as a single code point U+00E0.
emoji-regex offers a regular expression to match all emoji symbols and sequences (including textual representations of emoji) as per the Unicode Standard. It's based on emoji-test-regex-pattern, which generates (at build time) the regular expression pattern based on the Unicode Standard.
In ECMAScript 6 you should be able to detect it in a fairly simple way. I have compiled a simple regex comprising of different Unicode blocks namely:
Regex:
/[\u{1f300}-\u{1f5ff}\u{1f900}-\u{1f9ff}\u{1f600}-\u{1f64f}\u{1f680}-\u{1f6ff}\u{2600}-\u{26ff}\u{2700}-\u{27bf}\u{1f1e6}-\u{1f1ff}\u{1f191}-\u{1f251}\u{1f004}\u{1f0cf}\u{1f170}-\u{1f171}\u{1f17e}-\u{1f17f}\u{1f18e}\u{3030}\u{2b50}\u{2b55}\u{2934}-\u{2935}\u{2b05}-\u{2b07}\u{2b1b}-\u{2b1c}\u{3297}\u{3299}\u{303d}\u{00a9}\u{00ae}\u{2122}\u{23f3}\u{24c2}\u{23e9}-\u{23ef}\u{25b6}\u{23f8}-\u{23fa}]/ug
Playground: play around with emoji and regex
This answer doesn't directly answer the question but gives a fair insight on how to handle emoji using Unicode blocks and ES6.
72
Use unicode property escapes like this:
/\p{Emoji_Presentation}/ug
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