ObjectXmlProcessingInstruction

XmlProcessingInstruction object representationxmlprocessing instructions

inheritance relationship

member attribute

target

String, returns the target of this processing instruction

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readonly String XmlProcessingInstruction.target;

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data

String, set or return the content of this processing instruction

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String XmlProcessingInstruction.data;

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nodeType

Integer, the node type of the returned node

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readonly Integer XmlProcessingInstruction.nodeType;

The nodeType of different objects will return different values:

• XmlElement: ELEMENT_NODE(1)
• XmlAttr: ATTRIBUTE_NODE(2)
• XmlText: TEXT_NODE(3)
• XmlCDATASection: CDATA_SECTION_NODE(4)
• XmlProcessingInstruction: PROCESSING_INSTRUCTION_NODE(7)
• XmlComment: COMMENT_NODE(8)
• XmlDocument: DOCUMENT_NODE(9)
• XmlDocumentType: DOCUMENT_TYPE_NODE(10)

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nodeName

String, returns the name of the node, according to its type

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readonly String XmlProcessingInstruction.nodeName;

The nodeName of different objects will return different values:

• XmlElement: element name
• XmlAttr: property name
• XmlText: #text
• XmlCDATASection: #cdata-section
• XmlProcessingInstruction: Returns the specified target target
• XmlComment: #comment
• XmlDocument: #document
• XmlDocumentType: doctype name

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nodeValue

String, returns the name of the node, according to its type

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String XmlProcessingInstruction.nodeValue;

The nodeName of different objects will return different values:

• XmlElement: null
• XmlAttr: the value of the attribute
• XmlText: the content of the node
• XmlCDATASection: the content of the node
• XmlProcessingInstruction: Return the specified content data
• XmlComment: comment text
• XmlDocument: null
• XmlDocumentType: null

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ownerDocument

XmlDocument, returns the root element of the node (XmlDocumentobject)

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readonly XmlDocument XmlProcessingInstruction.ownerDocument;

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parentNode

XmlNode, which returns the parent node of a node

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readonly XmlNode XmlProcessingInstruction.parentNode;

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childNodes

XmlNodeList, returns a list of nodes that are children of the specified node

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readonly XmlNodeList XmlProcessingInstruction.childNodes;

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firstChild

XmlNode, returns the first child node of the node

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readonly XmlNode XmlProcessingInstruction.firstChild;

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lastChild

XmlNode, returns the last child node of the node

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readonly XmlNode XmlProcessingInstruction.lastChild;

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previousSibling

XmlNode, returns the node immediately before a node (at the same tree level), if there is no such node, then this property returns null

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readonly XmlNode XmlProcessingInstruction.previousSibling;

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nextSibling

XmlNode, returns the node immediately following an element (in the same tree hierarchy), if there is no such node, the property returns null

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readonly XmlNode XmlProcessingInstruction.nextSibling;

member function

hasChildNodes

Query whether there are child nodes

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Boolean XmlProcessingInstruction.hasChildNodes();

return result:

• Boolean, returns true if there are any child nodes, otherwise returns false

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normalize

Merge adjacent Text nodes and delete empty Text nodes

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XmlProcessingInstruction.normalize();

This method will iterate over all descendants of the current node, normalize the document by removing empty Text nodes, and merging all adjacent Text nodes. This method is useful for simplifying the structure of the document tree after inserting or deleting nodes.

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cloneNode

Create an exact copy of the specified node

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XmlNode XmlProcessingInstruction.cloneNode(Boolean deep = true);

Call parameters:

• deep: Boolean, whether to deep copy, when true, the cloned node will clone all child nodes of the original node

return result:

• XmlNode, returns the copied node

This method will copy and return a copy of the node on which it was called. If the parameter passed to it is true, it will also recursively copy all descendant nodes of the current node. Otherwise, it just copies the current node. The returned node does not belong to the document tree and its parentNode property is null. When copying an Element node, all its attributes will be copied.

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lookupPrefix

Returns the prefixes matching the specified namespace URI on the current node

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String XmlProcessingInstruction.lookupPrefix(String namespaceURI);

Call parameters:

• namespaceURI: String, specifies the matching namespace URI

return result:

• String, returns the matching prefix, returns null if not matched

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lookupNamespaceURI

Returns the namespace URIs matching the specified prefix on the current node

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String XmlProcessingInstruction.lookupNamespaceURI(String prefix);

Call parameters:

• prefix: String, specifies the matching prefix

return result:

• String, returns the matched namespace URI, returns null if not matched

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insertBefore

Insert a new child node before an existing child node

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XmlNode XmlProcessingInstruction.insertBefore(XmlNode newChild,
    XmlNode refChild);

Call parameters:

• newChild:XmlNode, inserting a new node
• refChild:XmlNode, insert a new node before this node

return result:

• XmlNode, returns the new child node

If newChild already exists in the document tree, it will be removed from the document tree and reinserted in its new position. Nodes from one document (or nodes created from one document) cannot be inserted into another document. That is, newChild's ownerDocument property must be the same as the current node's ownerDocument property.

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insertAfter

Insert a new child node after an existing child node

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XmlNode XmlProcessingInstruction.insertAfter(XmlNode newChild,
    XmlNode refChild);

Call parameters:

• newChild:XmlNode, inserting a new node
• refChild:XmlNode, insert a new node after this node

return result:

• XmlNode, returns the new child node

If newChild already exists in the document tree, it will be removed from the document tree and reinserted in its new position. Nodes from one document (or nodes created from one document) cannot be inserted into another document. That is, newChild's ownerDocument property must be the same as the current node's ownerDocument property.

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appendChild

Adds a new child node to the end of the node's child node list

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XmlNode XmlProcessingInstruction.appendChild(XmlNode newChild);

Call parameters:

• newChild:XmlNode, specifies the added node

return result:

• XmlNode, returns this new child node

If newChild already exists in the document tree, it will be removed from the document tree and reinserted in its new position. Nodes from one document (or nodes created from one document) cannot be inserted into another document. That is, newChild's ownerDocument property must be the same as the current node's ownerDocument property.

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replaceChild

Replace a child node with another

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XmlNode XmlProcessingInstruction.replaceChild(XmlNode newChild,
    XmlNode oldChild);

Call parameters:

• newChild:XmlNode, specifying a new node
• oldChild:XmlNode, specifying the node to be replaced

return result:

• XmlNode, if the replacement is successful, this method can return the replaced node, if the replacement fails, it will return null

If newChild already exists in the document tree, it will be removed from the document tree and reinserted in its new position. Nodes from one document (or nodes created from one document) cannot be inserted into another document. That is, newChild's ownerDocument property must be the same as the current node's ownerDocument property.

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removeChild

Remove a node from the child node list

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XmlNode XmlProcessingInstruction.removeChild(XmlNode oldChild);

Call parameters:

• oldChild:XmlNode, specifying the node to be deleted

return result:

• XmlNode, if the deletion is successful, this method can return the deleted node, if it fails, it will return null

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toString

Return the string representation of the object, generally return "[Native Object]", the object can be reimplemented according to its own characteristics

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String XmlProcessingInstruction.toString();

return result:

• String, returns a string representation of the object

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toJSON

Returns the JSON format representation of the object, generally returns a collection of readable properties defined by the object

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Value XmlProcessingInstruction.toJSON(String key = "");

Call parameters:

• key: String, not used

return result:

• Value, which returns a JSON-serializable value