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• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

Node.contains() 方法返回 布尔 value indicating whether a node is a descendant of a given node, i.e. the node itself, one of its direct children ( childNodes ), one of the children's direct children, and so on.

句法

node.contains( otherNode )
					

范例

This function checks to see if an element is in the page's body. As 包含 is inclusive and determining if the body contains itself isn't the intention of isInPage this case explicitly returns false .

function isInPage(node) {
  return (node === document.body) ? false : document.body.contains(node);
}
					

规范

规范	状态	注释
DOM The definition of 'Node.contains()' in that specification.	实时标准	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
包含	Chrome 16	Edge 12	Firefox 9	IE 9 9 Only supports 包含 for HTML elements and not for SVG elements.	Opera 7	Safari 1.1	WebView Android ≤37	Chrome Android 18	Firefox Android 9	Opera Android 10.1	Safari iOS 1	Samsung Internet Android 1.0

图例

完整支持

完整支持

见实现注意事项。

另请参阅

• Node.compareDocumentPosition
• Node.hasChildNodes

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. DOM (文档对象模型)
2. 节点
3. 特性

   1. baseURI
   2. baseURIObject
   3. childNodes
   4. firstChild
   5. isConnected
   6. lastChild
   7. localName
   8. namespaceURI
   9. nextSibling
   10. nodeName
   11. nodePrincipal
   12. nodeType
   13. nodeValue
   14. outerText
   15. ownerDocument
   16. parentElement
   17. parentNode
   18. prefix
   19. previousSibling
   20. rootNode
   21. textContent
4. 方法

   1. appendChild()
   2. cloneNode()
   3. compareDocumentPosition()
   4. contains()
   5. getRootNode()
   6. getUserData()
   7. hasChildNodes()
   8. insertBefore()
   9. isDefaultNamespace()
   10. isEqualNode()
   11. isSameNode()
   12. isSupported()
   13. lookupNamespaceURI()
   14. lookupPrefix()
   15. normalize()
   16. removeChild()
   17. replaceChild()
   18. setUserData()
5. 继承：

   1. EventTarget
6. DOM 相关页面

   1. AbortController
   2. AbortSignal
   3. AbstractRange
   4. Attr
   5. ByteString
   6. CDATASection
   7. CSSPrimitiveValue
   8. CSSValue
   9. CSSValueList
   10. CharacterData
   11. ChildNode
   12. 注释
   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. 元素
   37. ElementTraversal
   38. Entity
   39. EntityReference
   40. 事件
   41. EventTarget
   42. HTMLCollection
   43. MutationObserver
   44. NodeFilter
   45. NodeIterator
   46. NodeList
   47. NonDocumentTypeChildNode
   48. ProcessingInstruction
   49. PromiseResolver
   50. 范围
   51. StaticRange
   52. 文本
   53. TextDecoder
   54. TextEncoder
   55. TimeRanges
   56. TreeWalker
   57. TypeInfo
   58. USVString
   59. UserDataHandler
   60. XMLDocument