🔰UTF-16

🚧 under construction

JS ⟩ value ⟩ primitive ⟩ String ⟩ Unicode ⟩ encoding ⟩ UTF-16

(16-bit Unicode Transformation Format)

UTF-16 uses 16-bit unsigned integers as its code units.

• a code point is transformed into one or two UTF-16 code units.

• (plane 0) code points with only 1 code unit is called a "scalar".

• (plane 1 ~ 16) code points with 2 code units is called a "surrogate pair".

🗺️ 圖表

Unicode

💈範例

• replit ⟩

// code

📗

• Eloquent JavaScript ⟩ Strings & Character Codes

📘 手冊

• UTF-16 characters, code points, grapheme clusters

• String.prototype ⟩

  • .charCodeAt()

  • .codePointAt()

• String ⟩

  • .fromCodePoint()

  • .fromCharCode()