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Microsoft® JScript
++ and -- Operators

See Also

Language Reference |

Used to increment or decrement a variable by one.

result = ++variable
result = --variable
result = variable++
result = variable--

Syntax 2

The syntax of the ++ and --operators has the following parts:

Part Description
result Any variable.
variable Any variable.

The increment and decrement operators are used as a shortcut to modify the value stored in a variable. The value of an expression containing one of these operators depends on whether the operator comes before or after the variable.:

var j, k
k = 2
j = ++k
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.

© 1996 by Microsoft Corporation.

See also:

file: /Techref/language/asp/js/159.htm, 2KB, , updated: 1996/11/22 10:11, local time: 2019/12/10 01:53,

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