⭕bitwise operator

JS ⟩ statement ⟩ expression ⟩ operator ⟩ arithmetic ⟩ bitwise

• bitwise and (&), or (|), xor (^), not (~)

• shift left (<<), right (>>), right with 0 fill (>>>)

~x    // invert bits (convert to number, = -x - 1)

these operators convert their operand to 32-bit integers❗

🌟 table of operators

🔴 主題

• bitwise operators

  • ➕ bitwise and (&) / or (|) / xor (^) / bitwise not (~)

  • ➕ shift left (<<) / right (>>) / right with 0 fill (>>>)

• related topics

  • 💡 2's complement (-x = ~x + 1)

  • 🔰 double tilde (~~) - nearest integer towards 0.

• tools

  • 💾 bitview() - 32-bit representation of signed integers.

⭐️ 重點

bitwise operator

• NaN, ±Infinity all converts to 0❗

• all (except >>>) can be used with Number / BigInt.

👥 相關

• bitwise operators convert their operands to 32-bit integers❗

📗 參考

• JavaScript: The Definitive Guide ⟩ 4.8.3 Bitwise Operators