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Subtraction Operator (-) (JScript 5.6) 

  • Article

Subtracts the value of one expression from another or provides unary negation of a single expression.


result = number1 - number2


-number

Arguments

  • result
    Any numeric variable.
  • number
    Any numeric expression.
  • number1
    Any numeric expression.
  • number2
    Any numeric expression.

Remarks

In Syntax 1, the - operator is the arithmetic subtraction operator used to find the difference between two numbers. In Syntax 2, the - operator is used as the unary negation operator to indicate the negative value of an expression.

For Syntax 2, as for all unary operators, expressions are evaluated as follows:

  • If applied to undefined or null expressions, a run-time error is raised.

  • Objects are converted to strings.

  • Strings are converted to numbers if possible. If not, a run-time error is raised.

  • Boolean values are treated as numbers (0 if false, 1 if true).

The operator is applied to the resulting number. In Syntax 2, if the resulting number is nonzero, result is equal to the resulting number with its sign reversed. If the resulting number is zero, result is zero.

Requirements

Version 1

See Also

Reference

Subtraction Assignment Operator (-=) (JScript 5.6)

Concepts

Operator Precedence (JScript 5.6)
Operator Summary (JScript 5.6)