-= Operator

Microsoft® JScript™
-= Operator

Description

Used to subtract the value of an expression from a variable.

Syntax

result -= expression
The -= operator syntax has these parts:

Part Description
result Any numeric variable.
expression Any numeric expression.

Remarks

Using the -= operator is exactly the same as doing the following:
result = result - expression
For information on when a run-time error is generated by the - operator, see the Operator Behavior table.

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Part	Description
result	Any numeric variable.
expression	Any numeric expression.