XML DOM firstChild Property
 Complete Document Object Reference
Definition and Usage
The firstChild property returns the first child node of the document.
Syntax
documentObject.firstChild
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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 first child node.
Element nodes has a nodeType of 1, so if the first child node is not an
element node, it moves to the next node, and checks if this node is an element
node. This continues until the first child 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 displays the node name and node type of the
first child node of the document:
//check if the first node is an element node
function get_firstchild(n)
{
x=n.firstChild;
while (x.nodeType!=1)
{
x=x.nextSibling;
}
return x;
}
xmlDoc=loadXMLDoc("books.xml");
x=get_firstchild(xmlDoc);
document.write("Nodename: " + x.nodeName);
document.write(" (nodetype: " + x.nodeType);
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Output:
Nodename: bookstore (nodetype: 1)
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Try-It-Yourself Demos
Get the
first child node of the document
Get the
last child node of the document
Complete Document Object Reference
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