lib/Ext/core/Ext-more.js
function() {
        if (!Ext.documentBodyElement) {
            if (!document.body) {
                throw new Error("[Ext.getBody] document.body does not exist at this point");
            }

            Ext.documentBodyElement = Ext.get(document.body);
        }

        return Ext.documentBodyElement;
    }
function() {
        if (!Ext.documentBodyElement) {
            if (!document.body) {
                throw new Error("[Ext.getBody] document.body does not exist at this point");
            }

            Ext.documentBodyElement = Ext.get(document.body);
        }

        return Ext.documentBodyElement;
    }
Returns the current document body as an {@link Ext.Element}.
@return {Ext.Element} The document body.