为什么我的AJAX每两分钟调用一次?

时间:2015-05-13 13:54:50

标签: javascript ajax node.js mongoose

当我使用POST ajax函数时,我遇到了一个问题。

我正在运行一个由express-generator使用node,express,mongodb,mongoose和jade创建的简单app。在我创建了一个用于将新对象发布到数据库的模块之后,我注意到POST / DELETE请求已多次完成。这种情况在'on-click'模式下发生,如果我将功能更改为在加载时自动加载。

请注意:该功能仅由用户调用一次 - 浏览器中没有日志。看起来它每2分钟运行一次,我完全不知道为什么。

非常感谢任何帮助。

Javascript代码:

    $('#btn5').on('click', saveFiveDayForecast);


  saveFiveDayForecast = function() {

    var random = {
      city: 'One'
    }

    $.ajax({
      type: 'post',
      data: JSON.stringify(random),
      url: '/fiveDay/',
      contentType: 'application/json',
      dataType: 'JSON'
    })  

  } 

路由文件:

var express = require('express');
var router = express.Router();

// DB schema and model setup ----------------------------------------------

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

// create 16 day schema
var fiveDaySchema = new Schema({
    city         :   String
}, { collection: 'fiveDayModel' });

// create 16 day model for later manipulation in routing files
var fiveDayModel = mongoose.model('fiveDayModel', fiveDaySchema);

// END DB schema and model setup -------------------------------------------

/* POST */
router.post('/', function(req, res) {
    var time = new Date();

    var fiveDayWeatherToSave = new fiveDayModel( req.body );

    console.log('post in the routing file was fired at: ');
    console.log(time);

    fiveDayWeatherToSave.save(function (err, data) {
        if (err) console.log(err);
        else console.log('Saved ', data );
    });

});

来自节点的日志:

节点日志很有意思:第一次保存数据时,其中没有POST行,但数据仍然保存。

post in the routing file was fired at:
Wed May 13 2015 14:40:06 GMT+0100 (GMT Daylight Time)
Saved  { __v: 0, city: 'One', _id: 55535436f0ee99bc1d790220 }
POST /fiveDay/ - - ms - -
post in the routing file was fired at:
Wed May 13 2015 14:42:06 GMT+0100 (GMT Daylight Time)
Saved  { __v: 0, city: 'One', _id: 555354aef0ee99bc1d790221 }
POST /fiveDay/ - - ms - -

1 个答案:

答案 0 :(得分:0)

如果请求因超时而失败,浏览器将重试该请求。由于您永远不会返回响应,因此始终会发生这种情况。您应该回复res.end()res.send("success!")