How to check if a string contains emojis in JavaScript?

Published February 15, 2021

To check if a string contains emojis in JavaScript, we can use a regex expression to match a range of Unicode specific to emojis.

TL;DR

// Match almost all emoji
const str = "Hello 😃 😄";
/(\u00a9|\u00ae|[\u2000-\u3300]|\ud83c[\ud000-\udfff]|\ud83d[\ud000-\udfff]|\ud83e[\ud000-\udfff])/gi.test(
  str
);

For detailed explanation. Read on 📖.

This is the regex expression for matching almost all the emojis in a string. This range of Unicode will match almost all the emoji's in a string.

// Regular expression to match emoji
const regexExp = /(\u00a9|\u00ae|[\u2000-\u3300]|\ud83c[\ud000-\udfff]|\ud83d[\ud000-\udfff]|\ud83e[\ud000-\udfff])/gi;

Now let's write a string with some emojis.

// Regular expression to match emoji
const regexExp = /(\u00a9|\u00ae|[\u2000-\u3300]|\ud83c[\ud000-\udfff]|\ud83d[\ud000-\udfff]|\ud83e[\ud000-\udfff])/gi;

// String with 3 emoji and some letters
const str = "Hello 😃 😄";

Now to test the string, we can use the test() method available in the regular expression we defined. It can be done like this,

// Regular expression to match emoji
const regexExp = /(\u00a9|\u00ae|[\u2000-\u3300]|\ud83c[\ud000-\udfff]|\ud83d[\ud000-\udfff]|\ud83e[\ud000-\udfff])/gi;

// String with 3 emoji and some letters
const str = "Hello 😃 😄";

regexExp.test(str); // true
  • The test() method will accept a string type as an argument to test for a match.
  • The method will return boolean true if there is a match using the regular expression and false if not.

See the above example live in JSBin.

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