# Interface Range

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 final short`
  `END_TO_END`
  Compare end boundary-point of `sourceRange` to end boundary-point of Range on which `compareBoundaryPoints` is invoked.
  `static final short`
  `END_TO_START`
  Compare end boundary-point of `sourceRange` to start boundary-point of Range on which `compareBoundaryPoints` is invoked.
  `static final short`
  `START_TO_END`
  Compare start boundary-point of `sourceRange` to end boundary-point of Range on which `compareBoundaryPoints` is invoked.
  `static final 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 Details

  - ### 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 Details

  - ### 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.