🔴arithmetic operator

operators that operate on numbers. 🚧 under construction -> unary ops

JS ⟩ statement ⟩ expression ⟩ operator ⟩ arithmetic ⟩

(operator) that operate on numbers.

• unary：+, -, ++, --

• binary： +, -, *, /, %, **

• bitwise： ~, ^, |, >>, <<, >>>

🌟 table of operators

🧨 雷區

arithmetic operators do not allow to mix BigInt and Number❗

⭐️ 重點

in an arithmetic operation：

• non-numeric operands that cannot convert to numbers convert to NaN.

• if either operand is (or converts to) NaN, the result is (almost always) NaN.

🔴 主題

• unary arithmetic operators

• bitwise operators

• binary arithmetic operators

  • ➕ add/concate (+)

  • ➕ exponentiation (**)

  • ➕ division (/)

  • ➕ remainder (%)

  • 💾 modulo(a, b) - modulo

  • 💾 mod(a, b)

  • ⚖️ remainder vs. modulo vs. mod

• ⚠️non-numeric operand

📗 參考

• JavaScript: The Definitive Guide ⟩ 4.8