XML DOM previousSibling Property
 Complete Element Object Reference
Definition and Usage
The previousSibling property returns the previous sibling node (the
previous node
in the same tree level) of the selected
element
If there is no such node, this property returns null.
Syntax
elementNode.previousSibling
|
Tips and Notes
Note: Firefox, and most other browsers, will treat empty white-spaces
or new lines as text nodes, Internet Explorer will not. So, in the example
below, we have a function that checks the node type of the previous sibling node.
Element nodes has a nodeType of 1, so if the previous sibling node is not an element
node, it moves to the previous node, and checks if this node is an element node.
This continues until the previous sibling node (which must be an element
node) is found. This way, the result will be correct in all browsers.
Tip: To read more about the differences between browsers, visit our
DOM Browsers chapter in our XML DOM
Tutorial.
Example
The following code fragment loads "books.xml"
into xmlDoc using
loadXMLDoc() and gets the previous sibling node from the first <author>
element:
//check if the previous sibling node is an element node
function get_previoussibling(n)
{
x=n.previousSibling;
while (x.nodeType!=1)
{
x=x.previousSibling;
}
return x;
}
xmlDoc=loadXMLDoc("books.xml");
x=xmlDoc.getElementsByTagName("author")[0];
document.write(x.nodeName);
document.write(" = ");
document.write(x.childNodes[0].nodeValue);
y=get_previoussibling(x);
document.write("<br />Previous sibling: ");
document.write(y.nodeName);
document.write(" = ");
document.write(y.childNodes[0].nodeValue);
|
The output of the code above will be:
author = Giada De Laurentiis
Previous sibling: title = Everyday Italian
|
Try-It-Yourself Demos
previousSibling - Get the previous sibling of a node
nextSibling - Get the next sibling of a node
Complete Element Object Reference
 |
 |
 |
 |
|
The Ektron Intranet
lets you do everything you need to do on your corporate intranet and everything you want to do... all with just one application.
What can you do with the Ektron Intranet? |
 |
Navigate through content, documents, assets, colleagues and workgroups quickly and intuitively with enterprise search |
 |
Communicate with friends and colleagues with forums, message boards and corporate blogging using the new Social Networking Platform |
|
Utilize the extensive out-of-the box features or customize your site through Ektron CMS400.NET's open architecture |
 |
Promote collaboration in your organization through project workspaces where others can efficiently find information and work together |
 |
Author/edit content, manage navigation, menus, audit trails, workflow and approvals with the best in breed Content Management |
|
|
|
|
See why there are 20,000+ Ektron integrations worldwide.
|
|
 |
TAKE THE VIDEO TOUR |
 |
or download a FREE TRIAL today. |
|
HOME
Printer friendly page
