Simple recursive walk over DOM tree to create unique tags based on position

tag-element-recursive.js

//
// This can be used in Chrome console like:
//   tagElementRecursive('',$0);
//
function tagElementRecursive(parentTag, node, index){
    const tag = [
        parentTag,
        `${node.nodeName}_${index || 0}`
    ]
    .filter(str => str)
    .join('_');

    console.log(tag);

    Array.prototype.forEach.call(
        node.children,
        tagElementRecursive.bind(this, tag)
    );
}