++ and -- Operators
Description
Used to increment or decrement a variable
Syntax
result = ++variable
result = --variable
result = variable++
result = variable--
Syntax 2
++variable
--variable variable++
variable--The ++ and --operators' syntax has the following parts:
Part Description result Any variable. variable Any variable. Remarks
The increment and decrement operators are used as a shortcut to modify the value stored in a variable. The value of the expression containing this operator depends on whether the operator comes before or after the variable. For example:
var j, k k = 2 j = ++kIn this example, j is assigned the value 3, as the increment occurs before the expression is evaluated. Compare this to the following:var j, k k = 2 j = k++Here, j is assigned the value 2, as the increment occurs after the expression is evaluated.