🔰non-numeric operand

🚧 under construction

JS ⟩ operator ⟩ arithmetic ⟩ non-numeric operand

non-numeric operands in arithmetic operations:

• that cannot convert to numbers convert to NaN.

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

💈範例

• replit：

// Some code

📗 參考

• JavaScript: The Definitive Guide ⟩ 4.8

🚧

• example