重置
横排
竖排
/
mdn2
/
en-US
/
docs
/
Web
/
API
/
Selection
Selection
addRange
anchorNode
anchorOffset
collapse
collapseToEnd
collapseToStart
containsNode
deleteFromDocument
direction
empty
extend
focusNode
focusOffset
getComposedRanges
getRangeAt
isCollapsed
modify
rangeCount
removeAllRanges
removeRange
selectAllChildren
setBaseAndExtent
setPosition
toString
type