How Can You Detect Emojis in JavaScript Using Unicode Property Escape?

Detecting Emojis in JavaScript Using Unicode Property Escape

Introduction

Detecting emojis in JavaScript can be challenging due to their diverse character set. However, modern browsers offer a robust solution using Unicode property escape. This approach allows for accurate detection of emojis based on their category within the Unicode standard.

Using the p{Emoji} Property Escape

The p{Emoji} property escape matches any character that belongs to the Emoji category in Unicode. This includes:

• Emoji: ?, ?, ?
• Emoticons: :)

Using the P{Emoji} Property Escape

To detect non-emojis, use the P{Emoji} property escape. This matches any character that does not belong to the Emoji category, such as:

• Letters: a, b, z
• Numbers: 0, 1, 2

Example Code

Here's an example that demonstrates how to detect emojis using Unicode property escape:

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

Using the p{Extended_Pictographic} Property Escape

To specifically match characters that are typically understood as emojis, use the p{Extended_Pictographic} property escape. This avoids matching characters like numbers or punctuation that are also in the Emoji category.

Example Code

<code class="js">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>

Remember the u Flag

It's important to include the u flag at the end of your regular expression to enable Unicode support. This flag ensures that Unicode property escapes are recognized correctly.

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