Node.js

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

See more XML Examples

Demonstrates some ways to iterate over direct child nodes using the FirstChild / NextSibling and LastChild / PreviousSibling methods.

The input XML, available at http://www.chilkatsoft.com/data/fruit.xml, is this:

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    var xml = new chilkat.Xml();
    // child: Xml
    var child;
    // nextSibling: Xml
    var nextSibling;
    // prevSibling: Xml
    var prevSibling;

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

    // Iterate over the direct children by using FirstChild / NextSibling
    child = xml.FirstChild();
    var bContinue = xml.LastMethodSuccess;
    while ((bContinue == true)) {
        console.log(child.Tag + " : " + child.Content);
        nextSibling = child.NextSibling();
        bContinue = child.LastMethodSuccess;

        child = nextSibling;
    }

    console.log("-----");

    // Do the same, but with FirstChild2 / NextSibling2 to avoid
    // creating so many XML object instances:
    success = xml.FirstChild2();
    while (success == true) {
        console.log(xml.Tag + " : " + xml.Content);
        success = xml.NextSibling2();
    }

    // Revert back up to the parent:
    success = xml.GetParent2();

    console.log("-----");

    // Iterate in reverse order using LastChild / PreviousSibling
    child = xml.LastChild();
    bContinue = xml.LastMethodSuccess;
    while ((bContinue == true)) {
        console.log(child.Tag + " : " + child.Content);
        prevSibling = child.PreviousSibling();
        bContinue = child.LastMethodSuccess;

        child = prevSibling;
    }

    console.log("-----");

    // Do the same, but with LastChild2 / PreviousSibling2 to avoid
    // creating so many XML object instances:
    success = xml.LastChild2();
    while (success == true) {
        console.log(xml.Tag + " : " + xml.Content);
        success = xml.PreviousSibling2();
    }

    // Revert back up to the parent:
    success = xml.GetParent2();

}

chilkatExample();