XSLT and XPath function reference in alphabetical order
(Excerpt from “XSLT 2.0 & XPath 2.0” by Frank Bongers, chapter 5, translated from German)
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
The following overview contains all functions defined in the scope of XSLT 2.0 and XPath 2.0 in alphabetical order.
When following the respective link, each described function is assigned to a category and the origin (XSLT/XPath 1.0 or 2.0) is indicated. Then, the return value of the function as well as the number and type of the arguments expected for the call are described. The purpose of use of the individual function is explained and demonstrated by means of various examples. The signatures of the function are indicated in the form of a function definition, where possible, the definitions of the versions are compared.
The XPath functions include the fn: prefix, the XSLT functions have no prefix.
A
| fn:abs() | absolute value of the input number |
| fn:adjust-date-to-timezone() | adjusts a date to a timezone |
| fn:adjust-dateTime-to-timezone() | adjusts a point of time to a timezone |
| fn:adjust-time-to-timezone() | adjusts a daytime to a timezone |
| fn:avg() | average of input values |
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B
| fn:base-uri() | accessor; base URI of a node |
| fn:boolean() | conversion into a Boolean value (true or false) |
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C
| fn:ceiling() | rounding up of the input number |
| fn:codepoint-equal() | Unicode codepoint comparison |
| fn:codepoints-to-string() | Unicode codepoint conversion into string |
| fn:collection() | sequence of several document nodes from the input string |
| fn:compare() | test of two strings for equality |
| fn:concat() | string addition |
| fn:contains() | checks whether the string of the second argument is a substring of the first argument |
| fn:count() | number of nodes in the nodeset |
| current() | the current node |
| fn:current-date() | the current date |
| fn:current-dateTime() | the current date and daytime |
| current-group() | the current group of a grouping |
| current-grouping-key() | the current grouping key |
| fn:current-time() | the current daytime |
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D
| fn:data() | converts the input sequence into atomic values |
| fn:dateTime() | constructor for timestamp values |
| fn:day-from-date() | day from date |
| fn:day-from-dateTime() | day from point of time |
| fn:days-from-duration() | days from duration |
| fn:deep-equal() | determines the equality of two sequences |
| fn:default-collation() | URI of the default collation |
| fn:distinct-values() | removes indentical values from a sequence |
| fn:doc() | embedding of exactly one external document (without base URI) |
| fn:doc-available() | testing for availability of an external document |
| document() | embedding of one or more external documents (with base URI) |
| fn:document-uri() | URI of the related document node of a node passed on |
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E
| element-available() | availability of an instruction |
| fn:empty() | returns true for an empty sequence |
| fn:encode-for-uri() | encodes certain characters of a string which are reserved for other purposes or which are not permitted in an URI |
| fn:ends-with() | test for substring at the end of the string |
| fn:error() | error output |
| fn:escape-html-uri() | escapes the URI string |
| fn:exactly-one() | returns the input sequence of exactly one item, otherwise an error occurs |
| fn:exists() | returns true for a non-empty sequence |
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F
| fn:false() | Boolean value false |
| fn:floor() | rounding down of the input number |
| format-date() | formats the date to a string |
| format-dateTime() | formats a point in time to a string |
| format-number() | formats a number to a string |
| format-time() | formats a daytime to a string |
| function-available() | availability of a function |
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G
| generate-id() | generating ID at runtime |
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H
| fn:hours-from-dateTime() | hours from point of time |
| fn:hours-from-duration() | hours from duration |
| fn:hours-from-time() | hours from daytime |
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I
| fn:id() | returns a sequence of nodes with an ID value passed on |
| fn:idref() | sequence of nodes with an IDREF value passed on |
| fn:implicit-timezone() | the implicit timezone |
| fn:in-scope-prefixes() | returns prefixes of valid namespaces |
| fn:index-of() | returns the index(es) of the item(s) with the comparative value passed on |
| fn:insert-before() | inserts item(s) into the sequence to the position passed on |
| fn:iri-to-uri() | converting IRI string into URI string |
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K
| key() | defining a node with defined key |
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L
| fn:lang() | language determination (now XPath core function) |
| fn:last() | the index of the last node in the set |
| fn:local-name() | local part of a QName |
| fn:local-name-from-QName() | extracts the local identifier as string |
| fn:lower-case() | conversion into lower case letters |
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M
| fn:matches() | test for pattern matching |
| fn:max() | maximum of input values |
| fn:min() | minimum of input values |
| fn:minutes-from-dateTime() | minutes from point of time |
| fn:minutes-from-duration() | minutes from duration |
| fn:minutes-from-time() | minutes from daytime |
| fn:month-from-date() | month from date |
| fn:month-from-dateTime() | month from point of time |
| fn:months-from-duration() | months from duration |
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N
| fn:name() | QName of a node (backward compartible) |
| fn:namespace-uri() | namespace URI of a node |
| fn:namespace-uri-for-prefix() | namespace URI of the prefix passed on |
| fn:namespace-uri-from-QName() | extracts the namespace URI of a QName |
| fn:nilled() | accessor; reports the nilled condition of an element node as Boolean value |
| fn:node-name() | expanded QName of a node |
| fn:normalize-space() | normalises whitespace |
| fn:normalize-unicode() | returns the Unicode normal form |
| fn:not() | Boolean negation |
| fn:number() | conversion into a number |
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O
| fn:one-or-more() | returns the input sequence of one or more items, otherwise an error occurs |
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P
| fn:position() | the index of the current node in the set |
| fn:prefix-from-QName() | returns the prefix of the namespace |
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Q
| fn:QName() | constructor; returns the QName |
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R
| regex-group() | the current group of the result of a regular expression |
| fn:remove() | removes the item from the sequence at the indicated position |
| fn:replace() | replacing with pattern matching |
| fn:resolve-QName() | constructor; converts a string into an expanded QName |
| fn:resolve-uri() | resolves the relative URI indication with the base URI |
| fn:reverse() | returns an input sequence in reversed order |
| fn:root() | root node with regard to the tree of an input node |
| fn:round() | rounding up or down of the input number |
| fn:round-half-to-even() | rounding with variable precision |
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S
| fn:seconds-from-dateTime() | seconds from point of time |
| fn:seconds-from-duration() | seconds from duration |
| fn:seconds-from-time() | seconds from daytime |
| fn:starts-with() | test for substring at the beginning of the string |
| fn:static-base-uri() | the base URI of the static context |
| fn:string() | conversion into a string |
| fn:string-join() | joins strings with the separator passed on |
| fn:string-length() | number of characters in the test string |
| fn:string-to-codepoints() | string conversion into Unicode codepoints |
| fn:subsequence() | generates a subsequence by means of index numbers passed on |
| fn:substring() | extraction of a substring |
| fn:substring-after() | substring after the separator |
| fn:substring-before() | substring before the separator |
| fn:sum() | addition of values of a nodeset |
| system-property() | reading out the system properties of the runtime environment |
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T
| fn:timezone-from-date() | timezone from date |
| fn:timezone-from-dateTime() | timezone from point of time |
| fn:timezone-from-time() | timezone from daytime |
| fn:tokenize() | splits the input string by means of pattern matching |
| fn:trace() | keeping a debugging log file |
| fn:translate() | replaces a string by a pattern |
| fn:true() | Boolean value true |
| type-available() | availability of a schema type |
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U
| fn:unordered() | allows any output order of a sequence |
| unparsed-entity-public-id() | public ID of an unparsed, external entity |
| unparsed-entity-uri() | URI of an unparsed, external entity (DTD) |
| unparsed-text() | embedding an external, unparsed text |
| unparsed-text-available() | tests for availability of an external text object |
| fn:upper-case() | conversion into upper case letters |
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Y
| fn:year-from-date() | year from date |
| fn:year-from-dateTime() | year from point of time |
| fn:years-from-duration() | years from duration |
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Z
| fn:zero-or-one() | returns the input sequence of zero or one item, otherwise an error occurs |
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