How to Detect Emojis in JavaScript Using Unicode Property Escapes?

Detecting Emoji in JavaScript

Q: How can I detect if an input contains a Japanese emoji/emoticon using JavaScript?

A: Using JavaScript, you can effectively detect the presence of emojis by leveraging the power of Unicode property escapes.

Unicode property escapes, introduced by major browsers, offer a convenient way to match characters based on their Unicode properties. Specifically, the following property escapes can be used to identify emojis:

• p{Emoji}: Matches any character classified as an emoji
• P{Emoji}: Matches any character that is not an emoji

It's important to note that emojis extend beyond the traditional smiley faces. The Unicode standard encompasses a wide range of characters, including numbers, symbols, and others, that fall under the emoji category.

To ensure accurate detection, also consider using the Unicode property escape p{Extended_Pictographic}. This property captures all characters typically perceived as emojis.

Remember to include the "u" flag at the end of your regular expression to ensure proper handling of Unicode characters.

Example:

<code class="javascript">console.log(
  /\p{Emoji}/u.test('flowers'), // false :)
  /\p{Emoji}/u.test('flowers ???'), // true :)
  /\p{Emoji}/u.test('flowers 123'), // true :( 
)

console.log(
  /\p{Extended_Pictographic}/u.test('flowers'), // false :)
  /\p{Extended_Pictographic}/u.test('flowers ???'), // true :)
  /\p{Extended_Pictographic}/u.test('flowers 123'), // false :)
)</code>

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