ProcessingInstruction

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A processing instruction embeds application-specific instructions in XML which can be ignored by other applications that don't recognize them. Even if an XML processor ignores processing instructions, it will give them a place in the DOM.

A processing instruction is different from the XML declaration, which supplies information about the document such as character encoding, and can only appear as the first item in a document.

User-defined processing instructions cannot begin with 'xml', as these are reserved (such as <?xml-stylesheet ?>).

Processing instructions inherit methods and properties from Node.

Attributes

  • target (DOMString) — after the opening <? and before any whitespace separating it from data
  • data (DOMString) — the first non-whitespace character after target until before the closing ?>

Specification

Browser compatibility

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
ProcessingInstructionChrome Full support YesEdge Full support YesFirefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?
data
Deprecated
Chrome Full support YesEdge ? Firefox Full support YesIE ? Opera Full support YesSafari ? WebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS ? Samsung Internet Android ?
targetChrome Full support YesEdge Full support 12Firefox Full support YesIE ? Opera Full support YesSafari Full support YesWebView Android Full support YesChrome Android Full support YesFirefox Android Full support YesOpera Android Full support YesSafari iOS Full support YesSamsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
Deprecated. Not for use in new websites.
Deprecated. Not for use in new websites.

See also

相关主题
  1. Document Object Model
  2. ProcessingInstruction
  3. Inheritance:
    1. CharacterData
    2. Node
    3. EventTarget
  4. Related pages for DOM
    1. AbortController
    2. AbortSignal
    3. AbstractRange
    4. Attr
    5. ByteString
    6. CDATASection
    7. CSSPrimitiveValue
    8. CSSValue
    9. CSSValueList
    10. CharacterData
    11. ChildNode
    12. Comment
    13. CustomEvent
    14. DOMConfiguration
    15. DOMError
    16. DOMErrorHandler
    17. DOMException
    18. DOMImplementation
    19. DOMImplementationList
    20. DOMImplementationRegistry
    21. DOMImplementationSource
    22. DOMLocator
    23. DOMObject
    24. DOMParser
    25. DOMPoint
    26. DOMPointInit
    27. DOMPointReadOnly
    28. DOMRect
    29. DOMString
    30. DOMTimeStamp
    31. DOMTokenList
    32. DOMUserData
    33. Document
    34. DocumentFragment
    35. DocumentType
    36. Element
    37. ElementTraversal
    38. Entity
    39. EntityReference
    40. Event
    41. EventTarget
    42. HTMLCollection
    43. MutationObserver
    44. Node
    45. NodeFilter
    46. NodeIterator
    47. NodeList
    48. NonDocumentTypeChildNode
    49. PromiseResolver
    50. Range
    51. StaticRange
    52. Text
    53. TextDecoder
    54. TextEncoder
    55. TimeRanges
    56. TreeWalker
    57. TypeInfo
    58. USVString
    59. UserDataHandler
    60. XMLDocument