理順 JavaScript (18) – 語句及運算子

if (..) { ... } else if (..) { ... } else { ... }

switch (..) {  case A: ... break;  case B: ... break;  case C: ... break;  default: ... break;}

while (..) { ... } do ... while (..);for (i=0; i

with (..) { ... }

throw new Error('異常');try { ... }catch { ... }finally { ... }

運算子優先順序:

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