Easy Tutorial
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❮ Dom Met Node Clonenode Met Cdata Replacedata ❯

XML DOM Changing Node Values

The nodeValue property is used to change the node value.

The setAttribute() method is used to change the attribute value.

Try It Yourself - Example

The following example uses the XML file books.xml. loadXMLDoc(), located in an external JavaScript, is used to load the XML file.

Change the text node of an element

Change the attribute value using setAttribute

Change the attribute value using nodeValue

Changing the Value of an Element

In the DOM, everything is a node. Element nodes do not have a text value.

The text of an element node is stored in a child node. This node is called a text node.

The way to change the text of an element is to change the value of this child node (the text node).

Changing the Value of a Text Node

The nodeValue property can be used to change the value of a text node.

The following code snippet changes the text node value of the first <title> element:

Example

Example explanation:

Loop through and change the text node of all <title> elements: Try it yourself

Changing the Value of an Attribute

In the DOM, attributes are also nodes. Unlike element nodes, attribute nodes have a text value.

The way to change the value of an attribute is to change its text value.

This can be done using the setAttribute() method or the nodeValue property of the attribute node.

Changing an Attribute Using setAttribute()

The setAttribute() method changes the value of an existing attribute or creates a new attribute.

The following code changes the category attribute of the <book> element:

Example

Example explanation:

Loop through all <title> elements and add a new attribute: Try it yourself

Note: If the attribute does not exist, a new attribute (with the specified name and value) is created.

Changing an Attribute Using nodeValue

The nodeValue property can be used to change the value of an attribute node:

Example

Example explanation:

❮ Dom Met Node Clonenode Met Cdata Replacedata ❯