| 18 | ( ... ) | Grouping | 🈚 | null | |
| 17 | obj . prop | property access | L | null | |
| null | obj [ prop ] | computed property access | 🈚 | null | |
| null | new F(args) | with argument list | 🈚 | null | |
| null | f ( args ) | Function Call | 🈚 | null | |
| null | obj ?. prop | optional chaining | L | null | |
| 16 | new F() | without argument list | 🈚 | null | |
| 15 | ++ | post-increment | 🈚 | null | |
| null | -- | post-decrement | 🈚 | null | |
| 14 | ! | logical not | 🈚 | 1 | bool -> bool |
| 0 | ~ | bitwise not (invert bits) | 🈚 | 1 | int -> int |
| 0 | + | unary + (convert to number) | 🈚 | 1 | any -> num |
| 0 | - | unary - (negative) | 🈚 | 1 | num -> num |
| 0 | ++ | pre-increment | 🈚 | 1 | lval -> num |
| 0 | -- | pre-decrement | 🈚 | 1 | lval -> num |
| 0 | typeof | type of operand | 🈚 | 1 | any -> str |
| 0 | delete | delete a property | 🈚 | 1 | lval -> bool |
| 0 | void | return undefined | 🈚 | 1 | any -> undef |
| null | await | | 🈚 | null | |
| 13 | ** | exponentiation | R | 2 | (n, n) -> n |
| null | *, /, % | multiply, divide, remainder | L | 2 | (n, n) -> n |
| 0 | +, - | add, substract | L | 2 | (n, n) -> n |
| 0 | + | concatenate strings | L | 2 | (s, s) -> s |
| 0 | << | shift left | L | 2 | (i, i) -> i |
| 0 | >> | shift right (sign extension) | L | 2 | (i, i) -> i |
| 0 | >>> | shift right (0 extension) | L | 2 | (i, i) -> i |
| 0 | < <= > >= | compare (number) | L | 2 | (n, n) -> b |
| 0 | < <= > >= | compare (string) | L | 2 | (s, s) -> b |
| 0 | instanceof | test object class | L | 2 | (o, f) -> b |
| 0 | in | test property existence | L | 2 | (a, o) -> b |
| 0 | == | equal (sloppy) | L | 2 | (a, a) -> b |
| 0 | != | not equal (sloppy) | L | 2 | (a, a) -> b |
| 0 | === | equal (strict) | L | 2 | (a, a) -> b |
| 0 | !== | not equal (strict) | L | 2 | (a, a) -> b |
| 0 | & | bitwise AND | L | 2 | (i, i) -> i |
| 0 | ^ | bitwise XOR | L | 2 | (i, i) -> i |
| 0 | | | bitwise OR | L | 2 | (i, i) -> i |
| 0 | && | logical AND | L | 2 | (a, a) -> a |
| 0 | || | logical OR | L | 2 | (a, a) -> a |
| 0 | ?? | nullish coalescing | L | 2 | (a, a) -> a |
| 0 | ?: | ternary operator | R | 3 | (b, a, a) -> a |
| 0 | = | assignment | R | 2 | (lval, a) -> a |
| 0 | **= *= /= %= += -= &= ^= |= <<= >>= >>>= | operate/assign | R | 2 | (lval, a) -> a |
| 0 | , | return 2nd operand | L | 2 | (a, a) -> a |