在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 另请参阅
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

Range() constructor returns a newly created 范围 object whose start and end is the global Document 对象。

句法

range = new Range()
					

范例

In this example we create a new range with the Range() constructor, and set its beginning and end positions using the Range.setStartBefore() and Range.setEndAfter() methods. We then select the range using window.getSelection() and Selection.addRange() .

HTML

<p>First paragraph.</p>
<p>Second paragraph.</p>
<p>Third paragraph.</p>
<p>Fourth paragraph.</p>
					

JavaScript

const paragraphs = document.querySelectorAll('p');
// Create new range
const range = new Range();
// Start range at second paragraph
range.setStartBefore(paragraphs[1]);
// End range at third paragraph
range.setEndAfter(paragraphs[2]);
// Get window selection
const selection = window.getSelection();
// Add range to window selection
selection.addRange(range);
					

结果

规范

规范	状态	注释
DOM The definition of 'Range.Range()' 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
Range() 构造函数	Chrome Yes	Edge ≤18	Firefox 24	IE No	Opera 15	Safari Yes	WebView Android Yes	Chrome Android Yes	Firefox Android 24	Opera Android 14	Safari iOS Yes	Samsung Internet Android Yes

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

另请参阅

• The DOM interfaces index
• Document.createRange()

元数据

• 最后修改： Nov 30, 2019

相关话题

1. DOM (文档对象模型)
2. 范围
3. 构造函数

   1. Range()
4. 特性

   1. collapsed
   2. commonAncestorContainer
   3. endContainer
   4. endOffset
   5. startContainer
   6. startOffset
5. 方法

   1. cloneContents()
   2. cloneRange()
   3. collapse()
   4. compareBoundaryPoints()
   5. compareNode()
   6. comparePoint()
   7. createContextualFragment()
   8. deleteContents()
   9. detach()
   10. extractContents()
   11. getBoundingClientRect()
   12. getClientRects()
   13. insertNode()
   14. intersectsNode()
   15. isPointInRange()
   16. selectNode()
   17. selectNodeContents()
   18. setEnd()
   19. setEndAfter()
   20. setEndBefore()
   21. setStart()
   22. setStartAfter()
   23. setStartBefore()
   24. surroundContents()
   25. toString()
6. 继承：

   1. AbstractRange
7. 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. 节点
   45. NodeFilter
   46. NodeIterator
   47. NodeList
   48. NonDocumentTypeChildNode
   49. ProcessingInstruction
   50. PromiseResolver
   51. StaticRange
   52. 文本
   53. TextDecoder
   54. TextEncoder
   55. TimeRanges
   56. TreeWalker
   57. TypeInfo
   58. USVString
   59. UserDataHandler
   60. XMLDocument