# XML DOM setAttribute() Method

Element Object

## Definition and Usage

The setAttribute() method adds a new attribute.

If an attribute with that name already exists in the element, its value is changed to be that of the value parameter

## Syntax

elementNode.setAttribute(name,value)

Parameter | Description
--- | ---
name | Required. Specifies the name of the attribute to set
value | Required. Specifies the value of the attribute to set

## Example

The following code fragment loads "books.xml" into xmlDoc using loadXMLDoc() and adds an "edition" attribute to all <book> elements:

## Example

xmlDoc=loadXMLDoc("books.xml");
x=xmlDoc.getElementsByTagName("book");
for(i=0;i<x.length;i++)
{
x.item(i).setAttribute("edition","first");
}
//Output book title and edition value
x=xmlDoc.getElementsByTagName("title");
for (i=0;i<x.length;i++)
{
document.write(x[i].childNodes[0].nodeValue);
document.write(" - Edition: ");
document.write(x[i].parentNode.getAttribute('edition'));
document.write("
");
}

Output:

Everyday Italian - Edition: FIRST
Harry Potter - Edition: FIRST
XQuery Kick Start - Edition: FIRST
Learning XML - Edition: FIRST
Try it yourself »

## Try-It-Yourself Demos

setAttribute() - Change an attribute's value

Element Object

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