//设置为同步
 $.ajaxSettings.async = false;
  $.post("url", data, function(result) {
   // 请求处理
  },"json");
  //设置回异步
 $.ajaxSettings.async = true; 

$.ajax({
    type: "post",
    url: "url",
    data: {"reportId": rows[0].reportId},
    async: false,
    success: function(result){
        if (result.success){}else{} 
    }  
});