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    not


    The not function evaluates a boolean expression and returns the opposite value.

    Syntax

    not(expression )
    

    Arguments

    expression
    The expression is evaluated exactly as if it were passed as an argument to the boolean() function.

    Returns

    True for an expression that evaluates to false; false for an expression that evaluates to true.

    Notes

    • This function should behave similarly to the boolean() function except that it returns the opposite value.
    • You can test if an element doesn't have some attribute.
    <xsl:for-each match="//a[not(@name and @name = 'badname')]">
      <!-- iterates over any <a> element in the document, that
           either has no 'name' attribute at all, or it has one,
           but its value is not "badname". -->
    </xsl:template>
    

    Defined

    XPath 1.0 4.3

    Gecko support

    Supported.

     

    Document Tags and Contributors

    Contributors to this page: Sheppy, Markus Prokott, Mgjbot, Shoot, Fredchat, Nickolay, Ptak82, Jonnyq
    Last updated by: Sheppy,