Go to standard### XPath operator: boolean object != object

### Standard excerpt:

If both objects to be compared are node-sets, then the comparison will be true if and only if there is a node in the first
node-set and a node in the second node-set such that the result of performing the comparison on the string-values of the two
nodes is true. If one object to be compared is a node-set and the other is a number, then the comparison will be true if and
only if there is a node in the node-set such that the result of performing the comparison on the number to be compared and
on the result of converting the string-value of that node to a number using the number function is true. If one object to
be compared is a node-set and the other is a string, then the comparison will be true if and only if there is a node in the
node-set such that the result of performing the comparison on the string-value of the node and the other string is true. If
one object to be compared is a node-set and the other is a boolean, then the comparison will be true if and only if the result
of performing the comparison on the boolean and on the result of converting the node-set to a boolean using the boolean function
is true.

When neither object to be compared is a node-set and the operator is = or !=, then the objects are compared by converting
them to a common type as follows and then comparing them. If at least one object to be compared is a boolean, then each object
to be compared is converted to a boolean as if by applying the boolean function. Otherwise, if at least one object to be compared
is a number, then each object to be compared is converted to a number as if by applying the number function. Otherwise, both
objects to be compared are converted to strings as if by applying the string function. The = comparison will be true if and
only if the objects are equal; the != comparison will be true if and only if the objects are not equal. Numbers are compared
for equality according to IEEE 754 [IEEE 754]. Two booleans are equal if either both are true or both are false. Two strings
are equal if and only if they consist of the same sequence of UCS characters.

### Precedence:

Operators with greater precedence:
*(multiplication) |(union) <= < >= > mod div + - -(unary minus)

Operators with equal precedence:
=

Operators with less precedence:
or and

**Interactive xlab: ** [xsl:value-of] [xsl:template]