• Skip to main content
  • Skip to search
  • Skip to select language
MDN Web Docs
  • References
    • Overview / Web Technology

      Web technology reference for developers

    • HTML

      Structure of content on the web

    • CSS

      Code used to describe document style

    • JavaScript

      General-purpose scripting language

    • HTTP

      Protocol for transmitting web resources

    • Web APIs

      Interfaces for building web applications

    • Web Technology

      Web technology reference for developers

  • Guides
    • Overview / MDN Learning Area

      Learn web development

    • MDN Learning Area

      Learn web development

    • HTML

      Learn to structure web content with HTML

    • CSS

      Learn to style content using CSS

    • JavaScript

      Learn to run scripts in the browser

    • Accessibility

      Learn to make the web accessible to all

  • MDN Plus
    • Overview

      More MDN. Your MDN.

    • FAQ

      Frequently asked questions about MDN Plus

  • Already a subscriber?
  • Get MDN Plus
  1. References
  2. XPath
  3. Functions
  4. true

true

XSLT/XPath Reference: XSLT elements, EXSLT functions, XPath functions, XPath axes

The true function returns a boolean value of true.

Syntax

true()

Returns

Boolean true.

Defined

XPath 1.0 4.3

Gecko support

Supported.

Found a problem with this page?

  • Edit on GitHub
  • Source on GitHub
  • Report a problem with this content on GitHub
  • Want to fix the problem yourself? See our Contribution guide.

Last modified: May 1, 2022, by MDN contributors

MDN logo

Your blueprint for a better internet.

  • MDN on Twitter
  • MDN on GitHub

MDN

  • About
  • Hacks Blog
  • Careers

Support

  • Product help
  • Report a page issue
  • Report a site issue

Our communities

  • MDN Community
  • MDN Forum
  • MDN Chat

Developers

  • Web Technologies
  • Learn Web Development
  • MDN Plus
Mozilla logo
  • Website Privacy Notice
  • Cookies
  • Legal
  • Community Participation Guidelines

Visit Mozilla Corporation’s not-for-profit parent, the Mozilla Foundation.
Portions of this content are ©1998–2022 by individual mozilla.org contributors. Content available under a Creative Commons license.