Class Node

Method Details

• nodeName

  public abstract String nodeName()

  Get the node name of this node. Use for debugging purposes and not logic switching (for that, use instanceof).

  Returns:

  node name

• normalName

  public String normalName()

  Get the normalized name of this node. For node types other than Element, this is the same as nodeName(). For an Element, will be the lower-cased tag name.

  Returns:

  normalized node name

  Since:

  1.15.4.

• nameIs

  public boolean nameIs(String normalName)

  Test if this node has the specified normalized name, in any namespace.

  Parameters:

  normalName - a normalized element name (e.g. div).

  Returns:

  true if the element's normal name matches exactly

  Since:

  1.17.2

• parentNameIs

  public boolean parentNameIs(String normalName)

  Test if this node's parent has the specified normalized name.

  Parameters:

  normalName - a normalized name (e.g. div).

  Returns:

  true if the parent element's normal name matches exactly

  Since:

  1.17.2

• parentElementIs

  public boolean parentElementIs(String normalName, String namespace)

  Test if this node's parent is an Element with the specified normalized name and namespace.

  Parameters:

  normalName - a normalized element name (e.g. div).

  namespace - the namespace

  Returns:

  true if the parent element's normal name matches exactly, and that element is in the specified namespace

  Since:

  1.17.2

• hasAttributes

  protected abstract boolean hasAttributes()

  Check if this Node has an actual Attributes object.

• hasParent

  public boolean hasParent()

  Checks if this node has a parent. Nodes won't have parents if (e.g.) they are newly created and not added as a child to an existing node, or if they are a shallowClone(). In such cases, parent() will return null.

  Returns:

  if this node has a parent.

• attr

  public String attr(String attributeKey)

  Get an attribute's value by its key. Case insensitive

  To get an absolute URL from an attribute that may be a relative URL, prefix the key with abs:, which is a shortcut to the absUrl(java.lang.String) method.

  E.g.:

  String url = a.attr("abs:href");

  Parameters:

  attributeKey - The attribute key.

  Returns:

  The attribute, or empty string if not present (to avoid nulls).

  See Also:

  • attributes()
  • hasAttr(String)
  • absUrl(String)

• attributes

  public abstract Attributes attributes()

  Get each of the Element's attributes.

  Returns:

  attributes (which implements Iterable, with the same order as presented in the original HTML).

• attributesSize

  public int attributesSize()

  Get the number of attributes that this Node has.

  Returns:

  the number of attributes

  Since:

  1.14.2

• attr

  public Node attr(String attributeKey, String attributeValue)

  Set an attribute (key=value). If the attribute already exists, it is replaced. The attribute key comparison is case insensitive. The key will be set with case sensitivity as set in the parser settings.

  Parameters:

  attributeKey - The attribute key.

  attributeValue - The attribute value.

  Returns:

  this (for chaining)

• hasAttr

  public boolean hasAttr(String attributeKey)

  Test if this Node has an attribute. Case insensitive.

  Parameters:

  attributeKey - The attribute key to check.

  Returns:

  true if the attribute exists, false if not.

• removeAttr

  public Node removeAttr(String attributeKey)

  Remove an attribute from this node.

  Parameters:

  attributeKey - The attribute to remove.

  Returns:

  this (for chaining)

• clearAttributes

  public Node clearAttributes()

  Clear (remove) each of the attributes in this node.

  Returns:

  this, for chaining

• baseUri

  public abstract String baseUri()

  Get the base URI that applies to this node. Will return an empty string if not defined. Used to make relative links absolute.

  Returns:

  base URI

  See Also:

  • absUrl(java.lang.String)

• doSetBaseUri

  protected abstract void doSetBaseUri(String baseUri)

  Set the baseUri for just this node (not its descendants), if this Node tracks base URIs.

  Parameters:

  baseUri - new URI

• setBaseUri

  public void setBaseUri(String baseUri)

  Update the base URI of this node and all of its descendants.

  Parameters:

  baseUri - base URI to set

• absUrl

  public String absUrl(String attributeKey)

  Get an absolute URL from a URL attribute that may be relative (such as an <a href> or <img src>).

  E.g.: String absUrl = linkEl.absUrl("href");

  If the attribute value is already absolute (i.e. it starts with a protocol, like http:// or https:// etc), and it successfully parses as a URL, the attribute is returned directly. Otherwise, it is treated as a URL relative to the element's baseUri(), and made absolute using that.

  As an alternate, you can use the attr(java.lang.String) method with the abs: prefix, e.g.: String absUrl = linkEl.attr("abs:href");

  Parameters:

  attributeKey - The attribute key

  Returns:

  An absolute URL if one could be made, or an empty string (not null) if the attribute was missing or could not be made successfully into a URL.

  See Also:

  • attr(java.lang.String)
  • URL(java.net.URL, String)

• ensureChildNodes

  protected abstract List<Node> ensureChildNodes()

• childNode

  public Node childNode(int index)

  Get a child node by its 0-based index.

  Parameters:

  index - index of child node

  Returns:

  the child node at this index.

  Throws:

  IndexOutOfBoundsException - if the index is out of bounds.

• childNodes

  public List<Node> childNodes()

  Get this node's children. Presented as an unmodifiable list: new children can not be added, but the child nodes themselves can be manipulated.

  Returns:

  list of children. If no children, returns an empty list.

• childNodesCopy

  public List<Node> childNodesCopy()

  Returns a deep copy of this node's children. Changes made to these nodes will not be reflected in the original nodes

  Returns:

  a deep copy of this node's children

• childNodeSize

  public abstract int childNodeSize()

  Get the number of child nodes that this node holds.

  Returns:

  the number of child nodes that this node holds.

• childNodesAsArray

  protected Node[] childNodesAsArray()

• empty

  public abstract Node empty()

  Delete all this node's children.

  Returns:

  this node, for chaining

• parent

  public @Nullable Node parent()

  Gets this node's parent node.

  Returns:

  parent node; or null if no parent.

  See Also:

  • hasParent()

• parentNode

  public final @Nullable Node parentNode()

  Gets this node's parent node. Not overridable by extending classes, so useful if you really just need the Node type.

  Returns:

  parent node; or null if no parent.

• root

  public Node root()

  Get this node's root node; that is, its topmost ancestor. If this node is the top ancestor, returns this.

  Returns:

  topmost ancestor.

• ownerDocument

  public @Nullable Document ownerDocument()

  Gets the Document associated with this Node.

  Returns:

  the Document associated with this Node, or null if there is no such Document.

• remove

  public void remove()

  Remove (delete) this node from the DOM tree. If this node has children, they are also removed. If this node is an orphan, nothing happens.

• before

  public Node before(String html)

  Insert the specified HTML into the DOM before this node (as a preceding sibling).

  Parameters:

  html - HTML to add before this node

  Returns:

  this node, for chaining

  See Also:

  • after(String)

• before

  public Node before(Node node)

  Insert the specified node into the DOM before this node (as a preceding sibling).

  Parameters:

  node - to add before this node

  Returns:

  this node, for chaining

  See Also:

  • after(Node)

• after

  public Node after(String html)

  Insert the specified HTML into the DOM after this node (as a following sibling).

  Parameters:

  html - HTML to add after this node

  Returns:

  this node, for chaining

  See Also:

  • before(String)

• after

  public Node after(Node node)

  Insert the specified node into the DOM after this node (as a following sibling).

  Parameters:

  node - to add after this node

  Returns:

  this node, for chaining

  See Also:

  • before(Node)

• wrap

  public Node wrap(String html)

  Wrap the supplied HTML around this node.

  Parameters:

  html - HTML to wrap around this node, e.g. <div class="head"></div>. Can be arbitrarily deep. If the input HTML does not parse to a result starting with an Element, this will be a no-op.

  Returns:

  this node, for chaining.

• unwrap

  public @Nullable Node unwrap()

  Removes this node from the DOM, and moves its children up into the node's parent. This has the effect of dropping the node but keeping its children.

  For example, with the input html:

  <div>One <span>Two <b>Three</b></span></div>

  Calling element.unwrap() on the span element will result in the html:

  <div>One Two <b>Three</b></div>

  and the "Two " TextNode being returned.

  Returns:

  the first child of this node, after the node has been unwrapped. @{code Null} if the node had no children.

  See Also:

  • remove()
  • wrap(String)

• replaceWith

  public void replaceWith(Node in)

  Replace this node in the DOM with the supplied node.

  Parameters:

  in - the node that will replace the existing node.

• setParentNode

  protected void setParentNode(Node parentNode)

• replaceChild

  protected void replaceChild(Node out, Node in)

• removeChild

  protected void removeChild(Node out)

• addChildren

  protected void addChildren(Node... children)

• addChildren

  protected void addChildren(int index, Node... children)

• reparentChild

  protected void reparentChild(Node child)

• siblingNodes

  public List<Node> siblingNodes()

  Retrieves this node's sibling nodes. Similar to node.parent.childNodes(), but does not include this node (a node is not a sibling of itself).

  Returns:

  node siblings. If the node has no parent, returns an empty list.

• nextSibling

  public @Nullable Node nextSibling()

  Get this node's next sibling.

  Returns:

  next sibling, or null if this is the last sibling

• previousSibling

  public @Nullable Node previousSibling()

  Get this node's previous sibling.

  Returns:

  the previous sibling, or @{code null} if this is the first sibling

• siblingIndex

  public int siblingIndex()

  Get the list index of this node in its node sibling list. E.g. if this is the first node sibling, returns 0.

  Returns:

  position in node sibling list

  See Also:

  • Element.elementSiblingIndex()

• setSiblingIndex

  protected void setSiblingIndex(int siblingIndex)

• firstChild

  public @Nullable Node firstChild()

  Gets the first child node of this node, or null if there is none. This could be any Node type, such as an Element, TextNode, Comment, etc. Use Element.firstElementChild() to get the first Element child.

  Returns:

  the first child node, or null if there are no children.

  Since:

  1.15.2

  See Also:

  • Element.firstElementChild()
  • lastChild()

• lastChild

  public @Nullable Node lastChild()

  Gets the last child node of this node, or null if there is none.

  Returns:

  the last child node, or null if there are no children.

  Since:

  1.15.2

  See Also:

  • Element.lastElementChild()
  • firstChild()

• traverse

  public Node traverse(NodeVisitor nodeVisitor)

  Perform a depth-first traversal through this node and its descendants.

  Parameters:

  nodeVisitor - the visitor callbacks to perform on each node

  Returns:

  this node, for chaining

• forEachNode

  public Node forEachNode(Consumer<? super Node> action)

  Perform the supplied action on this Node and each of its descendants, during a depth-first traversal. Nodes may be inspected, changed, added, replaced, or removed.

  Parameters:

  action - the function to perform on the node

  Returns:

  this Node, for chaining

  See Also:

  • Element.forEach(Consumer)

• filter

  public Node filter(NodeFilter nodeFilter)

  Perform a depth-first filtered traversal through this node and its descendants.

  Parameters:

  nodeFilter - the filter callbacks to perform on each node

  Returns:

  this node, for chaining

• nodeStream

  public Stream<Node> nodeStream()

  Returns a Stream of this Node and all of its descendant Nodes. The stream has document order.

  Returns:

  a stream of all nodes.

  Since:

  1.17.1

  See Also:

  • Element.stream()

• nodeStream

  public <T extends Node> Stream<T> nodeStream(Class<T> type)

  Returns a Stream of this and descendant nodes, containing only nodes of the specified type. The stream has document order.

  Returns:

  a stream of nodes filtered by type.

  Since:

  1.17.1

  See Also:

  • Element.stream()

• outerHtml

  public String outerHtml()

  Get the outer HTML of this node. For example, on a p element, may return <p>Para</p>.

  Returns:

  outer HTML

  See Also:

  • Element.html()
  • Element.text()

• outerHtml

  protected void outerHtml(Appendable accum)

• html

  public <T extends Appendable> T html(T appendable)

  Write this node and its children to the given Appendable.

  Parameters:

  appendable - the Appendable to write to.

  Returns:

  the supplied Appendable, for chaining.

• sourceRange

  public Range sourceRange()

  Get the source range (start and end positions) in the original input source from which this node was parsed. Position tracking must be enabled prior to parsing the content. For an Element, this will be the positions of the start tag.

  Returns:

  the range for the start of the node, or untracked if its range was not tracked.

  Since:

  1.15.2

  See Also:

  • Parser.setTrackPosition(boolean)
  • Range.isImplicit()
  • Element.endSourceRange()
  • Attributes.sourceRange(String name)

• toString

  public String toString()

  Gets this node's outer HTML.

  Overrides:

  toString in class Object

  Returns:

  outer HTML.

  See Also:

  • outerHtml()

• indent

  protected void indent(Appendable accum, int depth, Document.OutputSettings out) throws IOException

  Throws:

  IOException

• equals

  public boolean equals(@Nullable Object o)

  Check if this node is the same instance of another (object identity test).

  For an node value equality check, see hasSameValue(Object)

  Overrides:

  equals in class Object

  Parameters:

  o - other object to compare to

  Returns:

  true if the content of this node is the same as the other

  See Also:

  • hasSameValue(Object)

• hashCode

  public int hashCode()

  Provides a hashCode for this Node, based on its object identity. Changes to the Node's content will not impact the result.

  Overrides:

  hashCode in class Object

  Returns:

  an object identity based hashcode for this Node

• hasSameValue

  public boolean hasSameValue(@Nullable Object o)

  Check if this node has the same content as another node. A node is considered the same if its name, attributes and content match the other node; particularly its position in the tree does not influence its similarity.

  Parameters:

  o - other object to compare to

  Returns:

  true if the content of this node is the same as the other

• clone

  public Node clone()

  Create a stand-alone, deep copy of this node, and all of its children. The cloned node will have no siblings or parent node. As a stand-alone object, any changes made to the clone or any of its children will not impact the original node.

  The cloned node may be adopted into another Document or node structure using Element.appendChild(Node).

  Overrides:

  clone in class Object

  Returns:

  a stand-alone cloned node, including clones of any children

  See Also:

  • shallowClone()

• shallowClone

  public Node shallowClone()

  Create a stand-alone, shallow copy of this node. None of its children (if any) will be cloned, and it will have no parent or sibling nodes.

  Returns:

  a single independent copy of this node

  See Also:

  • clone()

• doClone

  protected Node doClone(@Nullable Node parent)