function DatePicker(beginSelector,endSelector){
  // 仅选择日期
  $(beginSelector).datepicker(
  {
   language: "zh-CN",
   autoclose: true,
   startView: 0,
   format: "yyyy-mm-dd",
   clearBtn:true,
   todayBtn:false,
   endDate:new Date()
  }).on('changeDate', function(ev){   
   if(ev.date){
    $(endSelector).datepicker('setStartDate', new Date(ev.date.valueOf()))
   }else{
    $(endSelector).datepicker('setStartDate',null);
   }
  })

  $(endSelector).datepicker(
  {
   language: "zh-CN",
   autoclose: true,
   startView:0,
   format: "yyyy-mm-dd",
   clearBtn:true,
   todayBtn:false,
   endDate:new Date()
  }).on('changeDate', function(ev){ 
   if(ev.date){
    $(beginSelector).datepicker('setEndDate', new Date(ev.date.valueOf()))
   }else{
    $(beginSelector).datepicker('setEndDate',new Date());
   } 

  })
}

DatePicker("#date_begin","#date_end");