🔰scalar

single-code-unit character.

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

code points in the basic multilingual plane (single-code-unit characters).

• 0xD800 ~ 0xDFFFare reserved for surrogate pairs❗

🗺️ 圖表

📗

• Eloquent JavaScript ⟩ Strings & Character Codes

📘 手冊

• UTF-16 characters, code points, grapheme clusters

• String.prototype ⟩

  • .charCodeAt()

  • .codePointAt()

• String ⟩

  • .fromCodePoint()

  • .fromCharCode()