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]);
    }
})