TypeError: Cannot set property 'pageNum' of undefined

来源：6-9 商品列表页的开发5

点点点工程师

2017-10-15

$(document).on('click','.pg-item',function () {
        console.log('1');
       var $this = $(this);
        if($this.hasClass('active') || $this.hasClass('disabled')){
            return;
        }
        typeof _this.option.onSelectPage === 'function'
            ? _this.option.onSelectPage($this.data('value')) : null;
          console.log('1');
    });

//加载分页信息
    loadPageination :function (pageInfo) {
      !this.pageination && (this.pageination = new pageination());
        this.pageination.render($.extend({}, pageInfo, {
            container : $('.pagination'),
            onSelectPage :function (pageNum) {
                _this.listParam.pageNum = pageNum;
                _this.loadList();
            }
        }));
    }