Microsoft® JScript -= Operator |
Language Reference Version 1 |
Used to subtract the value of an expression from a variable.
result -= expressionThe -= operator syntax has these parts:
Part Description result Any numeric variable. expression Any numeric expression.
Using the -= operator is exactly the same as doing the following:result = result - expressionFor information on when a run-time error is generated by the - operator, see the Operator Behavior table.