code: function(container) {
  		var progressbar = _findProgressbar(container);
  		if (!progressbar) {
  			return;
  		}
  		var classList = progressbar.classList;
  		if (!classList.contains(CLASS_PROGRESSBAR_IN) || classList.contains(CLASS_PROGRESSBAR_OUT)) {
  			return;
  		}
  		classList.remove(CLASS_PROGRESSBAR_IN);
  		classList.add(CLASS_PROGRESSBAR_OUT);
  		progressbar.addEventListener('webkitAnimationEnd', function() {
  			progressbar.parentNode && progressbar.parentNode.removeChild(progressbar);
  			progressbar = null;
  		});
  		return;
  	}
docs: 关闭进度条
  @param {Object} container 可选，默认body，支持selector,DOM Node,mui wrapper