function () {
      me.downHight = 0;
      me.downwarp.style.height = 0;
      me.isDownScrolling = false;
      if (me.downProgressDom) me.downProgressDom.classList.remove('mescroll-rotate');
    }
function () {
      me.downHight = 0;
      me.downwarp.style.height = 0;
      me.isDownScrolling = false;
      if (me.downProgressDom) me.downProgressDom.classList.remove('mescroll-rotate');
    }
function ( ) { me . downHight = 0 ; me . downwarp . style . height = 0 ; me . isDownScrolling = false ; if ( me . downProgressDom ) me . downProgressDom . classList . remove ( 'mescroll-rotate' ) ; }
结束下拉刷新的方法
结束下拉刷新的方法
reset down height and width