Ext.DomHelper

DOM Methods Ext.DomHelper
var myEl = document.createElement('a');
myEl.href = 'http://www.yahoo.com/';
myEl.innerHTML = 'My Link';
myEl.setAttribute('target', '_blank');

var myDiv = document.createElement('div');
myDiv.id = 'my-div';

myDiv.appendChild(myEl);
document.body.appendChild(myDiv);	
Ext.DomHelper.append(document.body, {
    id: 'my-div',
    cn: [{
    	tag: 'a', 
    	href: 'http://www.yahoo.com/', 
    	html: 'My Link', 
    	target: '_blank'
    }]
});