A simple function to start walking the DOM written in vanilla JS

walk-the-dom.js

function walkTheDOM(node) {
    if (node.nodeType == 1) {
 
        //console.log(node.tagName);
 
        node = node.firstChild;
 
        while (node) {
            theDOMElementWalker(node);
            node = node.nextSibling;
        }
    }
}
var element = document.getElementByTagName('body');

console.log(walkTheDOM(element));