3.6

[2,5,7,18,24]

"Hello"

function(x){ return x*x; }

true

i

{ x:2, y:3 }

null

(i + 1.7) – sum 

P	A	Operator	Operator Type	Operation Performed
15	L	.	object, property	Property access
	L	[ ]	array, integer	Array index
	L	( )	function, arguments	Function call
	R	++	number	Pre-or-post increment (unary)
	R	- -	number	Pre-or-post decrement (unary)
	R	-	number	Unary minus (negation)
	R	~	integer	Bitwise complement (unary)
	R	!	boolean	Logical complement (unary)
	R	delete	variable	Undefine a property (unary)
	R	new	constructor call	Create new object (unary)
	R	typeof	any	Return data type (unary)
	R	void	any	Return undefined value (unary)
	L	* , / , %	numbers	Multiplication, division, remainder
12	L	+ , -	numbers	Addition, subtraction
	L	+	strings	String concatenation
11	L	<<	integers	Left shift
	L	>>	integers	Right shift with sign-extension
	L	>>>	integers	Right shift with zero-extension
10	L	< , <=	number of strings	Less than, less than or equal
	L	> , >=	number of strings	Greater than, greater than or equal
9	L	= =	any	Test for equality
	L	! =	any	Test for inequality
	L	= = = b	any	Test for identity
	L	! = = b	any	Test for non-identity
8	L	&	integers	Bitwise AND
7	L	^	integers	Bitwise XOR
6	L	|	integers	Bitwise OR
5	L	& &	booleans	Logical AND
4	L	| |	booleans	Logical OR
3	R	? :	booleans ,any,any	Conditional (ternary) operator
2	R	=	variable,any	Assignment
	R	*=, /=, %=, +=, -=, <<=, >>=, >>>=, &=, ^=	variable,any	Assignment with operation
1	L	,	any	Multiple evaluation

 i = 1;  j = ++i; 

 i = 1;  j = i++; 

"hello" + " " + "there";       // "hello there"            

c = a + b ; a = "2" ; b = "2" ; // "22" 

"Zoo" < "aardvark"    ?  true

1 + 2	חיבור, התוצאה היא 3
"1" + "2"	שרשור, התוצאה היא "12"
"1" + 2	שרשור, 2 מומר ל-"2" ,התוצאה היא "12"
11 < 3	השוואה נומרית , התוצאה היא שקר
"11" < "3"	השוואת מחרוזות , התוצאה היא אמת
"11" < 3	השוואה נומרית, "11" מומר ל- 11 התוצאה היא שקר
"eleven" < 3	שגיאה, "eleven" לא יכול להיות מומר למס'

(a = b) == 0

i = j = k = 0

total += sales_tax   

total = total + sales_tax  

Operator	Example	Equivalent
+=	a += b	a = a + b
- =	a -= b	a = a –b
*=	a *= b	a = a * b
/	a /= b	a = a / b
%=	a %= b	a = a % b
<<=	a <<= b	a = a << b
>>=	a >>= b	a = a >> b
&=	a &= b	a = a & b
|=	a |= b	a = a | b
^=	a ^= b	a = a ^ b
>>>=	a >>>= b	a = a >>> b

a operator = b

a = a operator b

x > 0 ? x * y : -x * y                           

greeting = "hello " + ( ( username != null ) ? username : "there");

greeting = "hello ";
if ( username != null )     
     greeting += username;

else
     greeting += "there";

typeof   i 
( typeof value == "string" ) ? "’" + value + "’" : value

<a href ="javascript:void window.open();">Open New Window</a> 

if(form.greeting === (void 0)) form.greeting = "Hello World!";