XML DOM replaceChild()
Method
Definition and Usage
The replaceChild()
method replaces a child node with another.
If successful, the function returns the replaced node; if it fails, it returns NULL.
Syntax
Parameter | Description |
---|---|
new_node | Required. Specifies the new node. |
old_node | Required. Specifies the child node to be replaced. |
Example
The following code snippet uses loadXMLDoc() to load "books.xml" into xmlDoc and replaces the first <book>
node:
xmlDoc = loadXMLDoc("books.xml");
x = xmlDoc.documentElement;
// Create book element, title element, and text node
newNode = xmlDoc.createElement("book");
newTitle = xmlDoc.createElement("title");
newText = xmlDoc.createTextNode("A Notebook");
// Append text node to title node
newTitle.appendChild(newText);
// Append title node to book node
newNode.appendChild(newTitle);
y = xmlDoc.getElementsByTagName("book")[0];
// Replace the first book node with the new node
x.replaceChild(newNode, y);
z = xmlDoc.getElementsByTagName("title");
for (i = 0; i < z.length; i++) {
document.write(z[i].childNodes[0].nodeValue);
document.write("<br>");
}