Introduction to emoji-regex

`emoji-regex` is a library that provides a regular expression to match all emoji symbols and sequences. It’s useful for developers who want to handle emoji characters in their applications efficiently.

Getting Started with emoji-regex

Here are some basic steps to get started with `emoji-regex`:

  
    // Installation
    npm install emoji-regex

    // Importing the library
    const emojiRegex = require('emoji-regex');

    // Using the regex
    const regex = emojiRegex();
    const text = 'I ❤️ JavaScript';
    console.log(text.match(regex)); // Output: [ '❤️' ]
  

Useful API Methods in emoji-regex

The `emoji-regex` library provides a variety of useful API methods. Below are some examples:

Matching Single Emoji

  
    const emojiRegex = require('emoji-regex');
    const regex = emojiRegex();
    const text = '🎉'; 
    const match = text.match(regex); 
    console.log(match); // Output: ['🎉']
  

Extracting Multiple Emojis

  
    const emojiRegex = require('emoji-regex');
    const regex = emojiRegex();
    const text = '🎉🚀✨'; 
    const match = text.match(regex); 
    console.log(match); // Output: ['🎉', '🚀', '✨']
  

Ignoring Non-Emoji Characters

  
    const emojiRegex = require('emoji-regex');
    const regex = emojiRegex();
    const text = 'Hello! 👋 How are you? 😊'; 
    const match = text.match(regex); 
    console.log(match); // Output: ['👋', '😊']
  

Application Example: Emoji Filter for Chat Application

Let’s create a simple chat application feature that filters out text so only emojis are shown:

  
    // Installation
    npm install emoji-regex

    // Importing the library
    const emojiRegex = require('emoji-regex');

    // Sample chat message
    const message = 'Hello! 👋 How are you? 😊 Let\'s meet at 7 PM ⏰';

    // Function to extract only emojis
    function extractEmojis(text) {
        const regex = emojiRegex();
        return text.match(regex);
    }

    // Using the function
    const emojis = extractEmojis(message);
    console.log(emojis); // Output: ['👋', '😊', '⏰']
  

This demonstrates how to use the `emoji-regex` library to filter out non-emoji characters from a chat message, making it a useful tool for various applications that need to process or display emojis.

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