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XML Tutorial

XML HOME XML Introduction XML How to use XML Tree XML Syntax XML Elements XML Attributes XML Namespaces XML Display XML HttpRequest XML Parser XML DOM XML XPath XML XSLT XML XQuery XML XLink XML Validator XML DTD XML Schema XML Server XML Examples XML Quiz XML Certificate

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XML DOM

DOM Introduction DOM Nodes DOM Accessing DOM Node Info DOM Node List DOM Traversing DOM Navigating DOM Get Values DOM Change Nodes DOM Remove Nodes DOM Replace Nodes DOM Create Nodes DOM Add Nodes DOM Clone Nodes DOM Examples

XPath Tutorial

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XSLT Tutorial

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XQuery Tutorial

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XML DTD

DTD Introduction DTD Building Blocks DTD Elements DTD Attributes DTD Elements vs Attr DTD Entities DTD Examples

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XSD Introduction XSD How To XSD <schema> XSD Elements XSD Attributes XSD Restrictions

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References

DOM Node Types DOM Node DOM NodeList DOM NamedNodeMap DOM Document DOM Element DOM Attribute DOM Text DOM CDATA DOM Comment DOM XMLHttpRequest DOM Parser XSLT Elements XSLT/XPath Functions

XML DOM setAttribute() Method

❮ Element Object

Example

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

var xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
   if (this.readyState == 4 && this.status == 200) {
       myFunction(this);
   }
};
xhttp.open("GET", "books.xml", true);
xhttp.send();

function myFunction(xml) {
    var x, i, xmlDoc, txt;
    xmlDoc = xml.responseXML;
    txt = "";
    x = xmlDoc.getElementsByTagName('title');
    // Add a new attribute to each title element
    for (i = 0; i < x.length; i++) {
        x[i].setAttribute("edition", "first");
    }
    // Output titles and edition value
    for (i = 0; i < x.length; i++) {
        txt += x[i].childNodes[0].nodeValue +
        " - Edition: " +
        x[i].getAttribute('edition') + "<br>";
    }
    document.getElementById("demo").innerHTML = txt;
}

Output:

Everyday Italian - Edition: first
Harry Potter - Edition: first
XQuery Kick Start - Edition: first
Learning XML - Edition: first
Try it Yourself »

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

Try-It-Yourself Demos

setAttribute() - Change an attribute's value

❮ Element Object