---
title: Functions
slug: Web/XPath/Functions
tags:
  - XPath
  - XPath_Reference
  - XSLT_Reference
translation_of: Web/XPath/Functions
---
<p>{{ XsltRef() }} 다음은 설명, 문법, 인수 목록, 결과형, 해당 W3C 권고안 소스, 현 <a href="ko/Gecko">Gecko</a> 지원 정도를 포함하는 기본 <a href="ko/XPath">XPath</a> 함수와 XPath에 더해진 <a href="ko/XSLT">XSLT</a> 고유의 추가분에 주석을 단 목록입니다. XPath/XSLT 함수 사용에 관한 추가 정보는, <a href="ko/Transforming_XML_with_XSLT/For_Further_Reading">For Further Reading</a> 페이지를 봐 주세요.</p>
<ul>
 <li><a href="Functions/boolean">boolean()</a></li>
 <li><a href="Functions/ceiling">ceiling()</a></li>
 <li><a href="Functions/concat">concat()</a></li>
 <li><a href="Functions/contains">contains()</a></li>
 <li><a href="Functions/count">count()</a></li>
 <li><a href="Functions/current">current()</a>
  <i>
   XSLT 고유</i>
 </li>
 <li><a href="ko/Functions/document">document()</a>
  <i>
   XSLT 고유</i>
 </li>
 <li><a href="Functions/element-available">element-available()</a></li>
 <li><a href="Functions/false">false()</a></li>
 <li><a href="Functions/floor">floor()</a></li>
 <li><a href="Functions/format-number">format-number()</a>
  <i>
   XSLT 고유</i>
 </li>
 <li><a href="Functions/function-available">function-available()</a></li>
 <li><a href="Functions/generate-id">generate-id()</a>
  <i>
   XSLT 고유</i>
 </li>
 <li><a href="Functions/id">id()</a>
  <i>
   (부분 지원함)</i>
 </li>
 <li><a href="Functions/key">key()</a>
  <i>
   XSLT 고유</i>
 </li>
 <li><a href="Functions/lang">lang()</a></li>
 <li><a href="Functions/last">last()</a></li>
 <li><a href="Functions/local-name">local-name()</a></li>
 <li><a href="Functions/name">name()</a></li>
 <li><a href="Functions/namespace-uri">namespace-uri()</a></li>
 <li><a href="Functions/normalize-space">normalize-space()</a></li>
 <li><a href="Functions/not">not()</a></li>
 <li><a href="Functions/number">number()</a></li>
 <li><a href="Functions/position">position()</a></li>
 <li><a href="Functions/round">round()</a></li>
 <li><a href="Functions/starts-with">starts-with()</a></li>
 <li><a href="Functions/string">string()</a></li>
 <li><a href="Functions/string-length">string-length()</a></li>
 <li><a href="Functions/substring">substring()</a></li>
 <li><a href="Functions/substring-after">substring-after()</a></li>
 <li><a href="Functions/substring-before">substring-before()</a></li>
 <li><a href="Functions/sum">sum()</a></li>
 <li><a href="Functions/system-property">system-property()</a>
  <i>
   XSLT 고유</i>
 </li>
 <li><a href="Functions/translate">translate()</a></li>
 <li><a href="Functions/true">true()</a></li>
 <li><a href="Functions/unparsed-entity-url">unparsed-entity-url()</a>
  <i>
   XSLT 고유</i>
  <i>
   (지원 안 함)</i>
 </li>
</ul>