Plan multilingue supplémentaire

SMP

Encoding & Standards

Le plan 1 d'Unicode (U+10000 à U+1FFFF), où sont alloués la majorité des points de code emoji.

The SMP is Unicode's Plane 1, containing characters that didn't fit in the original Basic Multilingual Plane. It includes emoji (U+1F000 to U+1FAFF), ancient scripts, musical notation, mathematical alphanumeric symbols, and more.

The emoji blocks in the SMP include:
- U+1F300-U+1F5FF: Miscellaneous Symbols and Pictographs
- U+1F600-U+1F64F: Emoticons
- U+1F680-U+1F6FF: Transport and Map Symbols
- U+1F900-U+1F9FF: Supplemental Symbols and Pictographs
- U+1FA00-U+1FA6F: Chess Symbols
- U+1FA70-U+1FAFF: Symbols and Pictographs Extended-A

Because SMP characters are above U+FFFF, they require 4 bytes in UTF-8 and surrogate pairs in UTF-16.

Termes associés

Paire de substituts Paire de substituts
Deux unités de code UTF-16 (un substitut haut U+D800–U+DBFF suivi d'un substitut bas U+DC00–U+DFFF) qui représentent ensemble un caractère au-delà de U+FFFF. Plan Unicode Plan Unicode
Groupe de 65 536 points de code Unicode consécutifs. Le plan 0 est le plan multilingue de base (BMP) ; la plupart des emoji se trouvent dans le plan 1 … UTF-16 UTF-16
Encodage Unicode à largeur variable utilisant 2 ou 4 octets par caractère, employé en interne par JavaScript, Java et Windows.

Outils associés

🔢 Recherche Unicode Recherche Unicode
Saisissez un point de code comme U+1F600 et obtenez l'emoji, les détails d'encodage, les octets UTF-8/16 et les entités HTML.

Articles associés

How to Handle Emojis in JavaScript: Strings, Length, and Rendering
Learn how to work with emojis in JavaScript: string length pitfalls, Unicode code points, regex, grapheme segmentation, and React rendering tips.
Emoji Encoding Guide: UTF-8, UTF-16 & Surrogate Pairs
A developer's guide to emoji encoding — how UTF-8, UTF-16, and UTF-32 represent emoji, and common pitfalls with surrogate pairs.