• Skip to main content
  • Skip to search
  • Skip to select language
  • 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. Web APIs
  3. XMLHttpRequest
  4. XMLHttpRequest.mozSystem

Related Topics

  1. XMLHttpRequest
  2. XMLHttpRequest
  3. Constructor
    1. XMLHttpRequest()
  4. Properties
    1. Non-Standard channel
    2. Non-Standard mozAnon
    3. Non-Standard mozBackgroundRequest
    4. Non-Standard mozSystem
    5. readyState
    6. response
    7. responseText
    8. responseType
    9. responseURL
    10. responseXML
    11. status
    12. statusText
    13. timeout
    14. upload
    15. withCredentials
  5. Methods
    1. abort()
    2. getAllResponseHeaders()
    3. getResponseHeader()
    4. open()
    5. overrideMimeType()
    6. send()
    7. setRequestHeader()
  6. Events
    1. abort
    2. error
    3. load
    4. loadend
    5. loadstart
    6. progress
    7. readystatechange
    8. timeout
  7. Inheritance:
    1. XMLHttpRequestEventTarget
    2. EventTarget
  8. Related pages for XMLHttpRequest
    1. FormData
    2. ProgressEvent
    3. XMLHttpRequestEventTarget
    4. XMLHttpRequestUpload

XMLHttpRequest.mozSystem

mozSystem is a boolean. If true, the same origin policy is not enforced on the request.

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: Jan 27, 2022, by MDN contributors

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
  • 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.