XML DOM Remove Nodes
The removeChild() method removes a specified node.
The removeAttribute() method removes a specified attribute.
Try it Yourself - Examples
The examples use the XML file books.xml.
Remove an element node
This example uses removeChild() to remove the first <book> element.
Remove the current element node
This example uses parentNode and removeChild() to remove the current <book> element.
Remove a text node
This example uses removeChild() to remove the text node from the first <title> element.
Clear the text of a text node
This example uses the nodeValue() property to clear the text node of the first <title> element.
Remove an attribute by name
This example uses removeAttribute() to remove the "category" attribute from the first <book> element.
Remove attributes by object
This example uses removeAttributeNode() to remove all attributes from all <book> elements.
Remove an Element Node
The removeChild() method removes a specified node.
When a node is removed, all its child nodes are also removed.
This code will remove the first <book> element from the loaded xml:
Example
y = xmlDoc.getElementsByTagName("book")[0];
xmlDoc.documentElement.removeChild(y);
Try it Yourself »
Example explained:
- Suppose "books.xml" is loaded xmlDoc
- Set the variable y to be the element node to remove
- Remove the element node by using the removeChild() method from the parent node
Remove Myself - Remove the Current Node
The removeChild() method is the only way to remove a specified node.
When you have navigated to the node you want to remove, it is possible to remove that node using the parentNode property and the removeChild() method:
Example explained:
- Suppose "books.xml" is loaded into xmlDoc
- Set the variable y to be the element node to remove
- Remove the element node by using the parentNode property and the removeChild() method
Remove a Text Node
The removeChild() method can also be used to remove a text node:
Example
x = xmlDoc.getElementsByTagName("title")[0];
y = x.childNodes[0];
x.removeChild(y);
Try it Yourself »
Example explained:
- Suppose "books.xml" is loaded into xmlDoc
- Set the variable x to be the first title element node
- Set the variable y to be the text node to remove
- Remove the element node by using the removeChild() method from the parent node
It is not very common to use removeChild() just to remove the text from a node. The nodeValue property can be used instead. See next paragraph.
Clear a Text Node
The nodeValue property can be used to change the value of a text node:
Example explained:
- Suppose "books.xml" is loaded into xmlDoc
- Get the first title element's first child node.
- Use the nodeValue property to clear the text from the text node
Loop through and change the text node of all <title> elements:
Try
it yourself
Remove an Attribute Node by Name
The removeAttribute() method removes an attribute node by its name.
Example: removeAttribute('category')
This code removes the "category" attribute in the first <book> element:
Example
x = xmlDoc.getElementsByTagName("book");
x[0].removeAttribute("category");
Try it Yourself »
Example explained:
- Suppose "books.xml" is loaded into xmlDoc
- Use getElementsByTagName() to get book nodes
- Remove the "category" attribute form the first book element node
Loop through and remove the "category" attribute of all <book> elements: Try it yourself
Remove Attribute Nodes by Object
The removeAttributeNode() method removes an attribute node, using the node object as parameter.
Example: removeAttributeNode(x)
This code removes all the attributes of all <book> elements:
Example
x = xmlDoc.getElementsByTagName("book");
for (i = 0; i < x.length; i++)
{
while (x[i].attributes.length > 0) {
attnode = x[i].attributes[0];
old_att = x[i].removeAttributeNode(attnode);
}
}
Try it Yourself »
Example explained:
- Suppose "books.xml" is loaded into xmlDoc
- Use getElementsByTagName() to get all book nodes
- For each book element check if there are any attributes
- While there are attributes in a book element, remove the attribute
