DOM - Element Object


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The XML elements can be defined as building blocks of XML. Elements can behave as containers to hold text, elements, attributes, media objects or all of these. Whenever parser parses an XML document against the well-formedness, parser navigates through an element node. An element node contains the text within it which is called as the text node.

Element object inherits the properties and the methods of the Node object as element object is also considered as a Node. Other than the node object properties and methods it has the following properties and methods.

Properties

The following table lists the attributes of the Element object −

Attribute Type Description
tagName DOMString It gives the name of the tag for the specified element.
schemaTypeInfo TypeInfo It represents the type information associated with this element. This has been removed. Refer specs.

Methods

Below table lists the Element Object methods −

Methods Type Description
getAttribute() DOMString Retrieves the value of the attribute if exists for the specified element.
getAttributeNS() DOMString Retrieves an attribute value by local name and namespace URI.
getAttributeNode() Attr Retrieves the name of the attribute node from the current element.
getAttributeNodeNS() Attr Retrieves an Attr node by local name and namespace URI.
getElementsByTagName() NodeList Returns a NodeList of all descendant Elements with a given tag name, in document order.
getElementsByTagNameNS() NodeList Returns a NodeList of all the descendant Elements with a given local name and namespace URI in document order.
hasAttribute() boolean Returns true when an attribute with a given name is specified on this element or has a default value, false otherwise.
hasAttributeNS() boolean Returns true when an attribute with a given local name and namespace URI is specified on this element or has a default value, false otherwise.
removeAttribute() No Return Value Removes an attribute by name.
removeAttributeNS No Return Value Removes an attribute by local name and namespace URI.
removeAttributeNode() Attr Specified attribute node is removed from the element.
setAttribute() No Return Value Sets a new attribute value to the existing element.
setAttributeNS() No Return Value Adds a new attribute. If an attribute with the same local name and namespace URI is already present on the element, its prefix is changed to be the prefix part of the qualifiedName, and its value is changed to be the value parameter.
setAttributeNode() Attr Sets a new attribute node to the existing element.
setAttributeNodeNS Attr Adds a new attribute. If an attribute with that local name and that namespace URI is already present in the element, it is replaced by the new one.
setIdAttribute No Return Value If the parameter isId is true, this method declares the specified attribute to be a user-determined ID attribute. This has been removed. Refer specs.
setIdAttributeNS No Return Value If the parameter isId is true, this method declares the specified attribute to be a user-determined ID attribute. This has been removed. Refer specs.


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