javascript Operator Precedence 运算符优先级

Operator	Description
. [] ()	Field access, array indexing, function calls, and expression grouping
++ -- - ~ ! delete new typeof void	Unary operators, return data type, object creation, undefined values
* / %	Multiplication, division, modulo division
+ - +	Addition, subtraction, string concatenation
<< >> >>>	Bit shifting
< <= > >= instanceof	Less than, less than or equal, greater than, greater than or equal, instanceof
== != === !==	Equality, inequality, strict equality, and strict inequality
&	Bitwise AND
^	Bitwise XOR
|	Bitwise OR
&&	Logical AND
||	Logical OR
?:	Conditional
= OP=	Assignment, assignment with operation
,	Multiple evaluation