[jQuery] $.ajax json type으로 보내기

var gridData = $(ID.GRID_MAIN).getArrayFromMultiSelectedRow();
if ( gridData.length == 0 ) {
    // 항목을 선택하세요.
    alert("<g:message code='MESSAGE.com.msg.select' />");
    return;
}
 
$.ajax({
    url         : './_deleteDiagnosisTargetList.do'
   ,type        : 'POST'
   ,cache       : false
   ,data        : JSON.stringify({data:gridData})
   ,contentType : 'application/json; charset=utf-8'
   ,dataType    : 'json'
   ,success     : function(result) {
       if ( result.success == true ) {
           var str = "";
           $.each(result.list, function(index, rec) {
                str += rec + "\n";
           });
           alert(str);
           $(ID.GRID_MAIN).trigger("reloadGrid");
       }
   }
   ,error: function(result) {
   }
});