🔰code plane

🚧 under construction

JS ⟩ value ⟩ primitive ⟩ String ⟩ Unicode ⟩ code plane

a range of 65,536 (0x10000) contiguous code points

• U+n0000 ~ U+nFFFF (n = 0x0 ~ 0x10), divided into 17 planes.

• Basic Multilingual Plane (plane 0, BMP) - U+0000 ~ U+FFFF.

• astral planes (supplementary planes, plane 1 ~ 16) - U+10000 ~ U+10FFFF.

astral code points : U+10000 ~ U+10FFFF.

💈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()