泛微OA 限制结束日期必须大于或者等于开始日期

<script>
  var ksrqFileid = WfForm.convertFieldNameToId("ksrq", "detail_1");//开始日期
  var jsrqFileid = WfForm.convertFieldNameToId("jsrq", "detail_1");//结束日期
WfForm.bindFieldAction("onclick",ksrqFileid+","+jsrqFileid , function(fieldid,rowIndex){
     ksrq=$("#"+ksrqFileid+"_"+rowIndex).val();
     jsrq=$("#"+jsrqFileid+"_"+rowIndex).val();
     //开始日期之后与结束日期之前
     if(fieldid.indexOf(ksrqFileid)>-1){
        WfForm.controlDateRange(jsrqFileid +"_"+rowIndex, '', jsrq); 
     }
     else if(fieldid.indexOf(jsrqFileid)>-1){
        WfForm.controlDateRange(jsrqFileid +"_"+rowIndex, ksrq, ''); 
     }
})
</script>