extj grid 获取分页数据

 // alert(gridPanel.getBottomToolbar().el.dom.getElementsByTagName("input")[0].value);当前页数
               var limit =gridPanel.getStore().getCount();  //当前页的多少条记录
        var total = gridPanel.getStore().getTotalCount();//总共多少条记录
           
         var totalPage = total < limit ? 1 : Math.ceil(total / limit);//总共有多少页

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转载自fuanyu.iteye.com/blog/2017527