```
public interface Range
```
See also the Document Object Model (DOM) Level 2 Traversal and Range Specification.

Since:

9, DOM Level 2

Field Summary

Fields
Modifier and Type	Field	Description
`static short`	`END_TO_END`	Compare end boundary-point of `sourceRange` to end boundary-point of Range on which `compareBoundaryPoints` is invoked.
`static short`	`END_TO_START`	Compare end boundary-point of `sourceRange` to start boundary-point of Range on which `compareBoundaryPoints` is invoked.
`static short`	`START_TO_END`	Compare start boundary-point of `sourceRange` to end boundary-point of Range on which `compareBoundaryPoints` is invoked.
`static short`	`START_TO_START`	Compare start boundary-point of `sourceRange` to start boundary-point of Range on which `compareBoundaryPoints` is invoked.

Method Summary

Modifier and Type	Method	Description
`DocumentFragment`	`cloneContents()`	Duplicates the contents of a Range
`Range`	`cloneRange()`	Produces a new Range whose boundary-points are equal to the boundary-points of the Range.
`void`	`collapse(boolean toStart)`	Collapse a Range onto one of its boundary-points
`short`	`compareBoundaryPoints(short how, Range sourceRange)`	Compare the boundary-points of two Ranges in a document.
`void`	`deleteContents()`	Removes the contents of a Range from the containing document or document fragment without returning a reference to the removed content.
`void`	`detach()`	Called to indicate that the Range is no longer in use and that the implementation may relinquish any resources associated with this Range.
`DocumentFragment`	`extractContents()`	Moves the contents of a Range from the containing document or document fragment to a new DocumentFragment.
`boolean`	`getCollapsed()`	TRUE if the Range is collapsed
`Node`	`getCommonAncestorContainer()`	The deepest common ancestor container of the Range's two boundary-points.
`Node`	`getEndContainer()`	Node within which the Range ends
`int`	`getEndOffset()`	Offset within the ending node of the Range.
`Node`	`getStartContainer()`	Node within which the Range begins
`int`	`getStartOffset()`	Offset within the starting node of the Range.
`void`	`insertNode(Node newNode)`	Inserts a node into the Document or DocumentFragment at the start of the Range.
`void`	`selectNode(Node refNode)`	Select a node and its contents
`void`	`selectNodeContents(Node refNode)`	Select the contents within a node
`void`	`setEnd(Node refNode, int offset)`	Sets the attributes describing the end of a Range.
`void`	`setEndAfter(Node refNode)`	Sets the end of a Range to be after a node
`void`	`setEndBefore(Node refNode)`	Sets the end position to be before a node.
`void`	`setStart(Node refNode, int offset)`	Sets the attributes describing the start of the Range.
`void`	`setStartAfter(Node refNode)`	Sets the start position to be after a node
`void`	`setStartBefore(Node refNode)`	Sets the start position to be before a node
`void`	`surroundContents(Node newParent)`	Reparents the contents of the Range to the given node and inserts the node at the position of the start of the Range.
`String`	`toString()`	Returns the contents of a Range as a string.

- Field Detail
  - START_TO_START
```
static final short START_TO_START
```
    Compare start boundary-point of sourceRange to start boundary-point of Range on which compareBoundaryPoints is invoked.
    
    See Also:
    
    Constant Field Values
  - START_TO_END
```
static final short START_TO_END
```
    Compare start boundary-point of sourceRange to end boundary-point of Range on which compareBoundaryPoints is invoked.
    
    See Also:
    
    Constant Field Values
  - END_TO_END
```
static final short END_TO_END
```
    Compare end boundary-point of sourceRange to end boundary-point of Range on which compareBoundaryPoints is invoked.
    
    See Also:
    
    Constant Field Values
  - END_TO_START
```
static final short END_TO_START
```
    Compare end boundary-point of sourceRange to start boundary-point of Range on which compareBoundaryPoints is invoked.
    
    See Also:
    
    Constant Field Values
- Method Detail
  - getStartContainer
```
Node getStartContainer()
                throws DOMException
```
    Node within which the Range begins
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - getStartOffset
```
int getStartOffset()
            throws DOMException
```
    Offset within the starting node of the Range.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - getEndContainer
```
Node getEndContainer()
              throws DOMException
```
    Node within which the Range ends
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - getEndOffset
```
int getEndOffset()
          throws DOMException
```
    Offset within the ending node of the Range.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - getCollapsed
```
boolean getCollapsed()
              throws DOMException
```
    TRUE if the Range is collapsed
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - getCommonAncestorContainer
```
Node getCommonAncestorContainer()
                         throws DOMException
```
    The deepest common ancestor container of the Range's two boundary-points.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - setStart
```
void setStart(Node refNode,
              int offset)
       throws RangeException,
              DOMException
```
    Sets the attributes describing the start of the Range.
    
    Parameters:
    
    refNode - The refNode value. This parameter must be different from null.
    
    offset - The startOffset value.
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if refNode or an ancestor of refNode is an Entity, Notation, or DocumentType node.
    
    DOMException - INDEX_SIZE_ERR: Raised if offset is negative or greater than the number of child units in refNode. Child units are 16-bit units if refNode is a type of CharacterData node (e.g., a Text or Comment node) or a ProcessingInstruction node. Child units are Nodes in all other cases.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - setEnd
```
void setEnd(Node refNode,
            int offset)
     throws RangeException,
            DOMException
```
    Sets the attributes describing the end of a Range.
    
    Parameters:
    
    refNode - The refNode value. This parameter must be different from null.
    
    offset - The endOffset value.
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if refNode or an ancestor of refNode is an Entity, Notation, or DocumentType node.
    
    DOMException - INDEX_SIZE_ERR: Raised if offset is negative or greater than the number of child units in refNode. Child units are 16-bit units if refNode is a type of CharacterData node (e.g., a Text or Comment node) or a ProcessingInstruction node. Child units are Nodes in all other cases.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - setStartBefore
```
void setStartBefore(Node refNode)
             throws RangeException,
                    DOMException
```
    Sets the start position to be before a node
    
    Parameters:
    
    refNode - Range starts before refNode
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if the root container of refNode is not an Attr, Document, or DocumentFragment node or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation node.
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - setStartAfter
```
void setStartAfter(Node refNode)
            throws RangeException,
                   DOMException
```
    Sets the start position to be after a node
    
    Parameters:
    
    refNode - Range starts after refNode
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if the root container of refNode is not an Attr, Document, or DocumentFragment node or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation node.
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - setEndBefore
```
void setEndBefore(Node refNode)
           throws RangeException,
                  DOMException
```
    Sets the end position to be before a node.
    
    Parameters:
    
    refNode - Range ends before refNode
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if the root container of refNode is not an Attr, Document, or DocumentFragment node or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation node.
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - setEndAfter
```
void setEndAfter(Node refNode)
          throws RangeException,
                 DOMException
```
    Sets the end of a Range to be after a node
    
    Parameters:
    
    refNode - Range ends after refNode.
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if the root container of refNode is not an Attr, Document or DocumentFragment node or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation node.
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - collapse
```
void collapse(boolean toStart)
       throws DOMException
```
    Collapse a Range onto one of its boundary-points
    
    Parameters:
    
    toStart - If TRUE, collapses the Range onto its start; if FALSE, collapses it onto its end.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - selectNode
```
void selectNode(Node refNode)
         throws RangeException,
                DOMException
```
    Select a node and its contents
    
    Parameters:
    
    refNode - The node to select.
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if an ancestor of refNode is an Entity, Notation or DocumentType node or if refNode is a Document, DocumentFragment, Attr, Entity, or Notation node.
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - selectNodeContents
```
void selectNodeContents(Node refNode)
                 throws RangeException,
                        DOMException
```
    Select the contents within a node
    
    Parameters:
    
    refNode - Node to select from
    
    Throws:
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if refNode or an ancestor of refNode is an Entity, Notation or DocumentType node.
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    WRONG_DOCUMENT_ERR: Raised if refNode was created from a different document than the one that created this range.
  - compareBoundaryPoints
```
short compareBoundaryPoints(short how,
                            Range sourceRange)
                     throws DOMException
```
    Compare the boundary-points of two Ranges in a document.
    
    Parameters:
    
    how - A code representing the type of comparison, as defined above.
    
    sourceRange - The Range on which this current Range is compared to.
    
    Returns:
    
    -1, 0 or 1 depending on whether the corresponding boundary-point of the Range is respectively before, equal to, or after the corresponding boundary-point of sourceRange.
    
    Throws:
    
    DOMException - WRONG_DOCUMENT_ERR: Raised if the two Ranges are not in the same Document or DocumentFragment.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - deleteContents
```
void deleteContents()
             throws DOMException
```
    Removes the contents of a Range from the containing document or document fragment without returning a reference to the removed content.
    
    Throws:
    
    DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if any portion of the content of the Range is read-only or any of the nodes that contain any of the content of the Range are read-only.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - extractContents
```
DocumentFragment extractContents()
                          throws DOMException
```
    Moves the contents of a Range from the containing document or document fragment to a new DocumentFragment.
    
    Returns:
    
    A DocumentFragment containing the extracted contents.
    
    Throws:
    
    DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if any portion of the content of the Range is read-only or any of the nodes which contain any of the content of the Range are read-only.
    HIERARCHY_REQUEST_ERR: Raised if a DocumentType node would be extracted into the new DocumentFragment.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - cloneContents
```
DocumentFragment cloneContents()
                        throws DOMException
```
    Duplicates the contents of a Range
    
    Returns:
    
    A DocumentFragment that contains content equivalent to this Range.
    
    Throws:
    
    DOMException - HIERARCHY_REQUEST_ERR: Raised if a DocumentType node would be extracted into the new DocumentFragment.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - insertNode
```
void insertNode(Node newNode)
         throws DOMException,
                RangeException
```
    Inserts a node into the Document or DocumentFragment at the start of the Range. If the container is a Text node, this will be split at the start of the Range (as if the Text node's splitText method was performed at the insertion point) and the insertion will occur between the two resulting Text nodes. Adjacent Text nodes will not be automatically merged. If the node to be inserted is a DocumentFragment node, the children will be inserted rather than the DocumentFragment node itself.
    
    Parameters:
    
    newNode - The node to insert at the start of the Range
    
    Throws:
    
    DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor container of the start of the Range is read-only.
    WRONG_DOCUMENT_ERR: Raised if newNode and the container of the start of the Range were not created from the same document.
    HIERARCHY_REQUEST_ERR: Raised if the container of the start of the Range is of a type that does not allow children of the type of newNode or if newNode is an ancestor of the container.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    
    RangeException - INVALID_NODE_TYPE_ERR: Raised if newNode is an Attr, Entity, Notation, or Document node.
  - surroundContents
```
void surroundContents(Node newParent)
               throws DOMException,
                      RangeException
```
    Reparents the contents of the Range to the given node and inserts the node at the position of the start of the Range.
    
    Parameters:
    
    newParent - The node to surround the contents with.
    
    Throws:
    
    DOMException - NO_MODIFICATION_ALLOWED_ERR: Raised if an ancestor container of either boundary-point of the Range is read-only.
    WRONG_DOCUMENT_ERR: Raised if newParent and the container of the start of the Range were not created from the same document.
    HIERARCHY_REQUEST_ERR: Raised if the container of the start of the Range is of a type that does not allow children of the type of newParent or if newParent is an ancestor of the container or if node would end up with a child node of a type not allowed by the type of node.
    INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
    
    RangeException - BAD_BOUNDARYPOINTS_ERR: Raised if the Range partially selects a non-text node.
    INVALID_NODE_TYPE_ERR: Raised if node is an Attr, Entity, DocumentType, Notation, Document, or DocumentFragment node.
  - cloneRange
```
Range cloneRange()
          throws DOMException
```
    Produces a new Range whose boundary-points are equal to the boundary-points of the Range.
    
    Returns:
    
    The duplicated Range.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - toString
```
String toString()
         throws DOMException
```
    Returns the contents of a Range as a string. This string contains only the data characters, not any markup.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    The contents of the Range.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.
  - detach
```
void detach()
     throws DOMException
```
    Called to indicate that the Range is no longer in use and that the implementation may relinquish any resources associated with this Range. Subsequent calls to any methods or attribute getters on this Range will result in a DOMException being thrown with an error code of INVALID_STATE_ERR.
    
    Throws:
    
    DOMException - INVALID_STATE_ERR: Raised if detach() has already been invoked on this object.

Interface Range

Field Summary

Method Summary

Field Detail

START_TO_START

START_TO_END

END_TO_END

END_TO_START

Method Detail

getStartContainer

getStartOffset

getEndContainer

getEndOffset

getCollapsed

getCommonAncestorContainer

setStart

setEnd

setStartBefore

setStartAfter

setEndBefore

setEndAfter

collapse

selectNode

selectNodeContents

compareBoundaryPoints

deleteContents

extractContents

cloneContents

insertNode

surroundContents

cloneRange

toString

detach