A method to easily append a child with attributes and content to an element

append.js

Node.prototype.append = function(element, content, attribs) {
    if (typeof element === 'string') {
        element = document.createElement(element);
        element.innerHTML = content ? content : '';
    }
    
    for (var attrib in attribs) {
        if (attribs.hasOwnProperty(attrib)) {
            element.setAttribute(attrib, attribs[attrib]);
        }
    }
    
    return this.appendChild(element);
}

// Usage
var parent = document.querySelector('#parent');
parent.append('a', 'This is the content', {
    class: 'child-a', 
    href:'http://nerdskills.io', 
    target: '_blank'
});