典型的 ajax 异步请求及错误处理

 $.ajax({
     url: path + '/emergency/saveEmergency.do',
     async: false,//同步，会阻塞操作
     type: 'POST',//PUT DELETE POST
     data: $("#saveform").serialize(),
     success: function (result) {
 //                    console.log(result);
         if (result) {
             window.location.reload();
         }
     }, error: function(msg) {
         for(var info in msg)
             console.log(info + " = " + msg[info]);
     }
 })