🔴assignment

JS ⟩ operator ⟩ assignment

an operator for arithmetic/bitwise/logical assignment.

⭐️ 重點

const can't be changed through reassignment (by using the assignment operators)

🔴 主題

• types of assignment operators

  • assignment (=) operator

  • assignment with operation

    • *= multiplication assignment.

      **= exponentiation assignment.

      /= division assignment.

      %= remainder assignment.

      += addition assignment.

      -= subtraction assignment

    • <<= left shift assignment.

      >>= right shift assignment.

      >>>= unsigned right shift assignment.

      &= bitwise AND assignment.

      ^= bitwise XOR assignment.

      |= bitwise OR assignment.

    • &&= logical AND assignment.

      ||= logical OR assignment.

      ??= logical nullish assignment.

  • destructuring assignment - [a, b] = arr, { a, b } = obj

📗 參考

• JavaScript: The Definitive Guide ⟩ 4.11 Assignment Expressions

📘 手冊

• Expressions and operators ⟩ assignment operators