export default function getScroll(target, top) {
    if (typeof window === 'undefined') {
        return 0;
    }
    var prop = top ? 'pageYOffset' : 'pageXOffset';
    var method = top ? 'scrollTop' : 'scrollLeft';
    var isWindow = target === window;
    var ret = isWindow ? target[prop] : target[method];
    // ie6,7,8 standard mode
    if (isWindow && typeof ret !== 'number') {
        ret = window.document.documentElement[method];
    }
    return ret;
}