js createElement

http://www.w3schools.com/js/js_htmldom_nodes.asp

var child = document.getElementById("p1");
child.parentNode.removeChild(child);

http://www.w3schools.com/jsref/met_document_createelement.asp

var btn = document.createElement("BUTTON");        // Create a <button> element
var t = document.createTextNode("CLICK ME");       // Create a text node
btn.appendChild(t);                                // Append the text to <button>
document.body.appendChild(btn);

MSDN

https://developer.mozilla.org/en-US/docs/Web/API/Document/createElement

document.body.onload = addElement;

function addElement () {

// create a new div element

// and give it some content

var newDiv = document.createElement("div");

var newContent = document.createTextNode("Hi there and greetings!");

newDiv.appendChild(newContent); //add the text node to the newly created div.

// add the newly created element and its content into the DOM

var currentDiv = document.getElementById("div1");

document.body.insertBefore(newDiv, currentDiv); }

js createElement

See also