JavaScript Increment or Decrement Operator
JavaScript Operators Definition:
•An operator that performs some operation on single or multiple operands and produces a result is called Operators.
•An Operators are symbols or keyword that enable JavaScript to perform some sort of actions.
JavaScript Increment/Decrement Operator
•The increment/decrement operators are used to increment/decrement a variable's values of an operand
| Operator | Name | Effect | 
|---|---|---|
++x | 
                            Pre-increment | Increments x by one, then returns x | 
x++ | 
                            Post-increment | Returns x, then increments x by one | 
--x | 
                            Pre-decrement | Decrements x by one, then returns x | 
x-- | 
                            Post-decrement | Returns x, then decrements x by one | 
Example:
Result:
11 11 10 11 9 9 10 9
Read Also:
- Arithmetic Operators
 - Comparison Operators
 - Logical Operators
 - Assignment Oerators
 - Conditional Operators (or) ternary Operator
 - Bitwise Operator