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。
Selection.extend()
method moves the focus of the selection to a specified point. The anchor of the selection does not move. The selection will be from the anchor to the new focus, regardless of direction.
sel.extend(node, offset)
node
The node within which the focus will be moved.
offset
可选
node
where the focus will be moved to. If not specified, the default value
0
被使用。
| 规范 | 状态 | 注释 |
|---|---|---|
|
选定 API
The definition of 'Selection.extend()' in that specification. |
工作草案 | Current |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
extend
|
Chrome Yes | Edge 12 | Firefox Yes | IE No | Opera Yes | Safari Yes | WebView Android No | Chrome Android Yes | Firefox Android Yes | Opera Android Yes | Safari iOS Yes | Samsung Internet Android Yes |
offset
parameter is optional
|
Chrome Yes | Edge ≤79 | Firefox 55 | IE No | Opera Yes | Safari Yes | WebView Android No | Chrome Android Yes | Firefox Android 55 | Opera Android Yes | Safari iOS Yes | Samsung Internet Android Yes |
完整支持
不支持
实验。期望将来行为有所改变。
Selection
, the interface it belongs to.
Selection
AbortController
AbortSignal
AbstractRange
Attr
ByteString
CDATASection
CSSPrimitiveValue
CSSValue
CSSValueList
CharacterData
ChildNode
注释
CustomEvent
DOMConfiguration
DOMError
DOMErrorHandler
DOMException
DOMImplementation
DOMImplementationList
DOMImplementationRegistry
DOMImplementationSource
DOMLocator
DOMObject
DOMParser
DOMPoint
DOMPointInit
DOMPointReadOnly
DOMRect
DOMString
DOMTimeStamp
DOMTokenList
DOMUserData
Document
DocumentFragment
DocumentType
元素
ElementTraversal
Entity
EntityReference
事件
EventTarget
HTMLCollection
MutationObserver
节点
NodeFilter
NodeIterator
NodeList
NonDocumentTypeChildNode
ProcessingInstruction
PromiseResolver
范围
StaticRange
文本
TextDecoder
TextEncoder
TimeRanges
TreeWalker
TypeInfo
USVString
UserDataHandler
XMLDocument