backbone-baseview.js
function (subview) {
            subview = (subview instanceof View === true) ? subview : this.get(subview);
            return subview._subviewtype;
        }
function (subview) {
            subview = (subview instanceof View === true) ? subview : this.get(subview);
            return subview._subviewtype;
        }
function ( subview ) { subview = ( subview instanceof View === true ) ? subview : this . get ( subview ) ; return subview . _subviewtype ; }
Get the subviews type or key
@memberOf SubViewManager#
@type {SubViewManager}
@param subview
@return {String|Number}
Get the subviews type or key