findChild

1

Hi guys, just wondering if someone would be kind enough to help me understand how this bit of javascript works below.


function findChild (element, nodeName)
{
    var child;
    
    for (child = element.firstChild; child != null; child = child.nextSibling)
    {
        if (child.nodeName == nodeName)
            return child;
    }
    
    return null;
}

I know what it basically does, but im having trouble running it through in my head clearly, as in talk it through too myself. Its apart of XML feed parser for a RSS widget i’m learning.

The for loop is what is confusing me I guess, specifically the variable and incrementing factor (child=child.nextSibling).

Any help would be greatly appreciated.

Thanks in advance.

Legion.