JavaScript运算符的优先级--记录

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1 (.) [] new 2 () 3 ++ -- 4 ! ~ +(单目) -(单目) typeof void delete 5 % * / 6 +(双目) -(单目) 7 << >> >>> 8 < <= > >= 9 == !== === 10 & 11 ^ 12 | 13 && 14 || 15 ?. 16 = += -= *= /= %= <<= >>= >>>= &= ^= |= 17 ,