(Node.js) AddAttribute - Insert New Attribute in an XML Node

Demonstrates adding an name=value attribute to an XML element.

This example uses the XML sample file here: sample1.xml. The sample1.xml file contains this content:

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var xml = new chilkat.Xml();

    var success = xml.LoadXmlFile("qa_data/xml/sample1.xml");
    if (success !== true) {
        console.log(xml.LastErrorText);
        return;
    }

    // Navigate to the "books" element:
    var bFound = xml.FindChild2("books");
    if (bFound == false) {
        console.log("No books child found!");
        return;
    }

    var numChildren = xml.NumChildren;

    var i = 0;
    while (i < numChildren) {

        // Navigate to the Nth book 
        xml.GetChild2(i);

        // Display the book title:
        console.log(xml.GetAttrValue("title"));

        // Add a new integer attribute:
        // Should never fail..
        xml.AddAttributeInt("bookId",i);

        // Add a new unread="yes" attribute:
        xml.AddAttribute("unread","yes");

        // Navigate back up to the parent:
        xml.GetParent2();

        i = i+1;
    }

    // Navigate back to the document root:
    xml.GetRoot2();

    // Save the updated document:
    success = xml.SaveXml("modified.xml");
    if (success !== true) {
        console.log(xml.LastErrorText);
        return;
    }

    console.log(xml.GetXml());

}

chilkatExample();