xsl:value-of
Evaluates an expression as a string, and outputs its value to the current result
tree.
Category: instruction
Content: sequence-constructor
Permitted parent elements:
any XSLT element whose content model is
sequence-constructor; any literal result element
Attributes
select?
| expression
|
Identifes the expression. If this is not specified, the value to be output is
obtained by evaluating the sequence constructor contained within the
xsl:value-of element. The full syntax of expressions is
outlined in XPath
syntax. Here are some examples of expressions that can be used in
the select attribute:
|
Expression
|
Value
|
|
TITLE
|
The character content of the first child TITLE
element if there is one
|
|
@NAME
|
The value of the NAME attribute of the current
element if there is one
|
|
.
|
The expanded character content of the current element
|
|
../TITLE
|
The expanded character content of the first TITLE
child of the parent element, if there is one
|
|
ancestor::SECTION/TITLE
|
The expanded character content of the first TITLE
child of the enclosing SECTION element, if there is
one
|
|
ancestor::*/TITLE
|
The expanded character content of the first TITLE
child of the nearest enclosing element that has a child element
named TITLE
|
|
PERSON[@ID]
|
The content of the first child PERSON element having
an ID attribute, if there is one
|
|
*[last()]/@ID
|
The value of the ID attribute of the last child
element of any type, if there are any
|
|
.//TITLE
|
The content of the first descendant TITLE element if
there is one
|
|
sum(*/@SALES)
|
The numeric total of the values of the SALES
attributes of all child elements that have a SALES
attribute
|
|
separator?
| {
string
}
| The separator defaults to a single space
if the select attribute is used, or to a zero-length string if a
sequence constructor is used. The separator attribute may be
specified as an attribute value template. |
[disable-output-escaping]?
| boolean
| If set to
yes, special characters such as "<" and "&" will be output
as themselves, not as entities. Be aware that in general this can produce
non-well-formed XML, HTML, or JSON. It is useful, however, when generating things such
as ASP or JSP pages. The default is no. |
Saxon availability
Available in XSLT 1.0 and later versions. Available in all Saxon editions. Available for all platforms.
Details
If the select expression evaluates to a sequence containing more
than one item, the result depends on whether a separator attribute
is present. If the separator is absent when running in 1.0 mode,
then only the first item is considered. When running in 2.0 mode, all the items
are output. The separator defaults to a single space if the select
attribute is used, or to a zero-length string if a sequence constructor is
used.
Links to W3C specifications
XSLT 3.0
Specification
See also
xsl:copy-of
xsl:text