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XML DOM setAttributeNode() Method

Element Object Reference

Example

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

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

function myFunction(xml) {
    var x, y, z, i, newatt, xmlDoc, txt;
    xmlDoc = xml.responseXML;
    txt = "";
    x = xmlDoc.getElementsByTagName('book');
    for (i = 0; i < x.length; i++) {
        newatt = xmlDoc.createAttribute("edition");
        newatt.value = "first";
        x[i].setAttributeNode(newatt);
    }
    // Output all "edition" attribute values
    for (i = 0; i < x.length; i++) {
        txt += "Edition: " + x[i].getAttribute("edition") + "<br>";
    }
    document.getElementById("demo").innerHTML = txt;
}

Output:

Edition: first
Edition: first
Edition: first
Edition: first

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Definition and Usage

The setAttributeNode() method adds a new attribute node.

If an attribute with that name already exists in the element, it is replaced by the new one. If the new attribute replaces an existing attribute, the replaced attribute node is returned, otherwise it returns null.

Syntax

elementNode.setAttributeNode(att_node)

Parameter	Description
att_node	Required. Specifies the attribute node to set

Element Object Reference

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