Dom node value null

String getPrefix The namespace prefix of this node, or null if it is unspecified. Node getPreviousSibling The node immediately preceding this node. String getTextContent This attribute returns the text content of this node and its descendants. Object getUserData String key Retrieves the object associated to a key on a this node. Node removeChild Node oldChild Removes the child node indicated by oldChild from the list of children, and returns it.

Order between disconnected nodes is always implementation-specific. A node which contains is always preceding, too. A node which is contained is always following, too. When it is defined to be null , setting it has no effect, including if the node is read-only. However, if a node has just been created and not yet added to the tree, or if it has been removed from the tree, this is null.

If there are no children, this is a NodeList containing no nodes. If there is no such node, this returns null. This is also the Document object used to create new nodes. When this node is a Document or a DocumentType which is not used with any Document yet, this is null. If refChild is null , insert newChild at the end of the list of children. If newChild is a DocumentFragment object, all of its children are inserted, in the same order, before refChild. If the newChild is already in the tree, it is first removed.

Note: Inserting a node before itself is implementation dependent. Parameters: newChild - The node to insert. Returns: The node being inserted. If newChild is a DocumentFragment object, oldChild is replaced by all of the DocumentFragment children, which are inserted in the same order.

Note: Replacing a node with itself is implementation dependent. Parameters: newChild - The new node to put in the child list. Returns: The node replaced. Parameters: oldChild - The node being removed. Returns: The node removed.

Parameters: newChild - The node to add. If it is a DocumentFragment object, the entire contents of the document fragment are moved into the child list of this node Returns: The node added.

Returns: Returns true if this node has any children, false otherwise. The duplicate node has no parent parentNode is null and no user data. User data associated to the imported node is not carried over.

However, if any UserDataHandlers has been specified along with the associated data these handlers will be called with the appropriate parameters before this method returns. Cloning an Element copies all attributes and their values, including those generated by the XML processor to represent defaulted attributes, but this method does not copy any children it contains unless it is a deep clone.

This includes text contained in an the Element since the text is contained in a child Text node. Cloning an Attr directly, as opposed to be cloned as part of an Element cloning operation, returns a specified attribute specified is true. Cloning an Attr always clones its children, since they represent its value, no matter whether this is a deep clone or not. Cloning an EntityReference automatically constructs its subtree if a corresponding Entity is available, no matter whether this is a deep clone or not.

Cloning any other type of node simply returns a copy of this node. Collectives on Stack Overflow. Learn more. Asked 9 years, 4 months ago. Active 3 years, 10 months ago. Viewed 26k times. To give you an idea, this is what it looks like Thanks, Parijat.

Improve this question. Add a comment. Active Oldest Votes. Note: Since it does not create new nodes unlike the Document. Parameters: source - The node to move into this document. Returns: The adopted node, or null if this operation fails, such as when the source node comes from a different implementation. Since: DOM Level 3 normalizeDocument void normalizeDocument This method acts as if the document was going through a save and load cycle, putting the document in a "normal" form.

As a consequence, this method updates the replacement tree of EntityReference nodes and normalizes Text nodes, as defined in the method Node. Otherwise, the actual result depends on the features being set on the Document. Noticeably this method could also make the document namespace well-formed according to the algorithm described in , check the character normalization, remove the CDATASection nodes, etc.

See DOMConfiguration for details. TRUE ; myDocument. If errors occur during the invocation of this method, such as an attempt to update a read-only node or a Node. Note this method might also report fatal errors DOMError. When possible this simply changes the name of the given node, otherwise this creates a new node with the specified name and replaces the existing node with the new node as described below. If simply changing the name of the given node is not possible, the following operations are performed: a new node is created, any registered event listener is registered on the new node, any user data attached to the old node is removed from that node, the old node is removed from its parent if it has one, the children are moved to the new node, if the renamed node is an Element its attributes are moved to the new node, the new node is inserted at the position the old node used to have in its parent's child nodes list if it has one, the user data that was attached to the old node is attached to the new node.

When the node being renamed is an Element only the specified attributes are moved, default attributes originated from the DTD are updated according to the new element name. In addition, the implementation may update default attributes from other schemas. When the node being renamed is an Attr that is attached to an Element , the node is first removed from the Element attributes map.

Then, once renamed, either by modifying the existing node or creating a new one as described above, it is put back. Parameters: n - The node to rename. Returns: The renamed node.

This is either the specified node or the new node that was created to replace the specified node. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy. Conceptually, it is the root of the document tree, and provides the primary access to the document's data.

Creates a ProcessingInstruction node given the specified name and data strings. This is a convenience attribute that allows direct access to the child node that is the document element of the document.

The location of the document or null if undefined or if the Document was created using DOMImplementation. The configuration used when Document. Returns a NodeList of all the Elements in document order with a given tag name and are contained in the document.

An attribute specifying the encoding used for this document at the time of the parsing. An attribute specifying, as part of the XML declaration , the encoding of this document. An attribute specifying, as part of the XML declaration , whether this document is standalone. An attribute specifying, as part of the XML declaration , the version number of this document. A namespace must have been specified at creation time; it is not possible to add a namespace afterwards. Returns the first direct child node for which nodeName equals name.

A namespace URI must be specified at creation time and cannot be changed later. Returns the next sibling in the document tree. Returns the next sibling element with tag name tagName if tagName is non-empty; otherwise returns any next sibling element.

Returns a null element if no such sibling exists. Note: This function does not take the presence of namespaces into account when processing the names of element and attribute nodes. As a result, the returned name can contain any namespace prefix that may be present. To obtain the node name of an element or attribute, use localName ; to obtain the namespace prefix, use namespaceURI.

See also setNodeValue and nodeName. Calling normalize on an element converts all its children into a standard form. Returns the parent node. If this node has no parent, a null node is returned i.

A namespace prefix must be specified at creation time. If a node was created with a namespace prefix, you can change it later with setPrefix. Returns the previous sibling in the document tree. Returns the previous sibilng element with tag name tagName if tagName is non-empty; otherwise returns any previous sibling element. Removes oldChild from the list of children. Returns a new reference to oldChild on success or a null node on failure. See also insertBefore , insertAfter , replaceChild , and appendChild.

Replaces oldChild with newChild. See also insertBefore , insertAfter , removeChild , and appendChild. Writes the XML representation of the node and all its children to the stream stream. This function uses indent as the amount of space to indent the node. If the document contains invalid XML characters or characters that cannot be encoded in the given encoding, the result and behavior is undefined.

If encodingPolicy is QDomNode::EncodingFromDocument and this node is a document node, the encoding of text stream stream 's encoding is set by treating a processing instruction by name "xml" as an XML declaration, if one exists, and otherwise defaults to UTF XML declarations are not processing instructions, but this behavior exists for historical reasons. If this node is not a document node, the text stream's encoding is used.

If the node has a namespace prefix, this function changes the namespace prefix of the node to pre. Otherwise this function does nothing. A namespace prefix must have be specified at creation time; it is not possible to add a namespace prefix afterwards. If the node is not an attribute, the returned object will be null.