Microsoft® JScript™ -= Operator | Language Reference Version 1

See Also

##### 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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