JAVASCRIPT OPERATORS

Operators:

An operator is a symbol which will be manipulated on the operand.

They are classified in three types:

·        Unary operators

·        Binary operators

·        Ternary operators

1. Unary operators:- unary operators are the operators which will be manipulated on single operand.
Eg: - -a (unary minus)
2. Binary operators:- binary operators are the operators which will be manipulated on minimum two operands.
Eg: - a+b;

Hierarchy and associativity i.e. direction they have to solve. 

Category	Operators	Associativity
Highest category	() function call, [] subscript, -> pointer to member access, . Member access	L  to R
Unary category	~ is compliment, ! not, - unary minus, + unary plus, ++ -- preincrement/predecrement, & address of, * value of address, sizeof, typecast	R to L
Arithmetic category	*,/,% modular division/modulus + addition,- subtract	L to R
Bitwise category	<< left shift >> Right shift	L to R
Relational category	< less than, <= less than or equal to, > greater than, >= greater than or equal to	L to R
Equality	== comparison, != not equal to	L to R
Bitwise category	& bitwise AND	L to R
	^ bitwise exclusion OR
	| bitwise OR
Logical category	&& logical AND	L to R
	|| logical OR
Ternary operator	? :	R to L
Assignment operator	= simple assignment, *= multiply and assign, /=, %=,+=,-=,<<=,>>=,&=,^=,|=	R to L
Comma operator	, comma	L to R
Unary category	++, -- post increment/post decrement	R to L

Arithmetic operator:
Arithmetic expression is taking place by valid combination of numeric variable, numeric constant and arithmetic operator.
Eg: a+b;
1)47%5à2, (2) -47%5à -2 (3)47%-5à2 (4)-47%-5à-2
Relational/comparison operator:

·        A relational expression is taking place by valid combination of numeric variable, numeric constant and relational operator.

·        A relational operator always returns either 1 or 0.

Eg: a>b
1)47>4à1 (2)67>65à0 (3)if a=7,b=8 then a<bà1
Logical operator:

·        A logical expression is a valid combination of logical values, variables and operators.

·        A logical value can be combined with relational expression.

·        A logical operator also returns either 1 or 0.

Eg: 1) a=5>4&& 4>3à1 (2) a=7&&8à1 (3) a=7||0à1
(4) a=1+(2&&2)+3à5 (5) a=!-67à0 (6)a=!(-3>3)à1