XPath:Functions:not
From MDC
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The not function evaluates a boolean expression and returns the opposite value.
[edit] Syntax
not( expression )
[edit] Arguments
expression- The expression is evaluated exactly as if it were passed as an argument to the boolean() function.
[edit] Returns
True for an expression that evaluates to false; false for an expression that evaluates to true.
[edit] Notes
- This function should behave similarly to the boolean() function except that it returns the opposite value.
[edit] Defined
[edit] Gecko support
Supported.