Operator Precedence
Operators are used to perform various task, such as calculation, making decision etc.
The combination of operators and operands form expressions. Expressions are evaluated in the order of high to low precedence.
Below table showing operators in the decreasing order of precedence from top to bottom and left to right.
example
Operators are used to perform various task, such as calculation, making decision etc.
The combination of operators and operands form expressions. Expressions are evaluated in the order of high to low precedence.
Below table showing operators in the decreasing order of precedence from top to bottom and left to right.
Operator Type
|
Individual Operator
|
member
|
., []
|
New
|
new
|
function call
|
()
|
Increment
|
++
|
Decrement
|
--
|
Logical-not
|
!
|
Bitwise not
|
~
|
Unary +
|
+
|
Unary negation
|
-
|
typeof
|
typeof
|
void
|
void
|
Delete
|
delete
|
Multiplication
|
*
|
Division
|
/
|
Modulus
|
%
|
Addition
|
+
|
Subtraction
|
-
|
Bitwise shift
|
<<, >>, >>>
|
Relational
|
<, <=, >, >=
|
In
|
in
|
instanceof
|
instanceof
|
Equality
|
==, !=, ===, !==
|
Bitwise-and
|
&
|
Bitwise-xor
|
^
|
Bitwise-or
|
|
|
Logical-and
|
&&
|
Logical-or
|
||
|
Conditional
|
?:
|
Assignment
|
=, +=, -=, *=, /=, %=, <<=, >>=, >>>=, &=, ^=, |=
|
Comma
|
,
|
<!DOCTYPE html>
<html>
<head>
<title>javaScript Operator Precedence</title>
</head>
<body>
<h1>JavaScript Operator Precedence</h1>
<script>
document.write("2 * 3 / 6 + 4 - 4 : Result : " + (2 * 3 / 6 + 4 - 4) + "<br />");
document.write("(2 * (3 / 6 + 4) - 4) : Result : " + (2 * (3 / 6 + 4) - 4) + "<br />");
document.write("((2 * 3 / 6 + 4) - 4) : Result : " + ((2 * 3 / 6 + 4) - 4) + "<br />");
</script>
</body>
</html>
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