operator:
,----var a=1,b=2;
;----var a=1;
=----var a=1;
+
-
*
/
%
>>=
<<=
>>>=
word
var
arguments
new
true
false
null
undefined
NaN
Object
Array
String
Boolean
Number
typeof
instanceof
function
()
{}
''
.
||
&&
!
:
,
[]
'use strict'
control
return
continue
function
width
void
if...else...
do...while...
foreach(... in ...)
for(...;...;...)
switch(){case:...break;default:....break;}
exception
try
{
throw;
}
catch()
{
}
finally
{
}