MUI 解决动态列表页图片懒加载再次加载不成功的bug问题

$.fn.imageLazyload = function(options) {    var lazyloadApis = [];    this.each(function() {      var self = this;      var lazyloadApi = null;      if (self === document || self === window) {        self = document.body;      } //对，bug就在这，判定时如果body已有该属性，就不在加载了，整体的代码没看明白，注释太少了啊      var id = self.getAttribute('data-imageLazyload');      if (!id) {        id = ++$.uuid;        $.data[id] = lazyloadApi = new ImageLazyload(self, options);        self.setAttribute('data-imageLazyload', id);      } else {        lazyloadApi = $.data[id];      }      lazyloadApis.push(lazyloadApi);    });    return lazyloadApis.length === 1 ? lazyloadApis[0] : lazyloadApis;  }

document.body.removeAttribute('data-imagelazyload');  mui(document).imageLazyload({    placeholder: '../../images/img_head3.png'  });