Javascript Express：为什么这个GET请求要执行两次？

我有一些用Jade写的代码，里面有一个链接。链接的目的地由Jade生成。单击链接时，我从控制台注意到GET请求被执行了两次

为什么会这样？我怎样才能解决这个问题

这是我的密码：

Jade文件：

ul.media-list
    each paper in paperList
        div.panel.panel-default
            div.panel-body
                li.media
                    div.media-left.media-middle
                        a(href='/publication/view/#{paper.id}')
                            | Some image
                    div.media-body
                        div.btn-group(role='group')
                            //!!! When this link is being clicked, GET is executed twice !!!
                            a.btn.btn-default(href='/publication/view/#{paper.id}')
                                | View

GET /publication/view/123 200 490ms - 5623
GET /publication/view/123 304 458ms - -

var publication = require('./routes/publication');
app.use('/publication', publication);

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

router.get('/view/:id', function (req, res) {
    var data;
    //Some database functions here
    //Just an example
    res.render('publication', {someData: data});
});

控制台：

ul.media-list
    each paper in paperList
        div.panel.panel-default
            div.panel-body
                li.media
                    div.media-left.media-middle
                        a(href='/publication/view/#{paper.id}')
                            | Some image
                    div.media-body
                        div.btn-group(role='group')
                            //!!! When this link is being clicked, GET is executed twice !!!
                            a.btn.btn-default(href='/publication/view/#{paper.id}')
                                | View

GET /publication/view/123 200 490ms - 5623
GET /publication/view/123 304 458ms - -

var publication = require('./routes/publication');
app.use('/publication', publication);

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

router.get('/view/:id', function (req, res) {
    var data;
    //Some database functions here
    //Just an example
    res.render('publication', {someData: data});
});

app.js:

ul.media-list
    each paper in paperList
        div.panel.panel-default
            div.panel-body
                li.media
                    div.media-left.media-middle
                        a(href='/publication/view/#{paper.id}')
                            | Some image
                    div.media-body
                        div.btn-group(role='group')
                            //!!! When this link is being clicked, GET is executed twice !!!
                            a.btn.btn-default(href='/publication/view/#{paper.id}')
                                | View

GET /publication/view/123 200 490ms - 5623
GET /publication/view/123 304 458ms - -

var publication = require('./routes/publication');
app.use('/publication', publication);

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

router.get('/view/:id', function (req, res) {
    var data;
    //Some database functions here
    //Just an example
    res.render('publication', {someData: data});
});

publication.js:

ul.media-list
    each paper in paperList
        div.panel.panel-default
            div.panel-body
                li.media
                    div.media-left.media-middle
                        a(href='/publication/view/#{paper.id}')
                            | Some image
                    div.media-body
                        div.btn-group(role='group')
                            //!!! When this link is being clicked, GET is executed twice !!!
                            a.btn.btn-default(href='/publication/view/#{paper.id}')
                                | View

GET /publication/view/123 200 490ms - 5623
GET /publication/view/123 304 458ms - -

var publication = require('./routes/publication');
app.use('/publication', publication);

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

router.get('/view/:id', function (req, res) {
    var data;
    //Some database functions here
    //Just an example
    res.render('publication', {someData: data});
});

---

这只是一个假设，但看起来你的浏览器正在使用某种预测算法来预加载你的链接，甚至在你点击它们之前

Express.js用

304 Not Modified

response响应第二个响应，这表明它是用有效值发送的，以验证先前缓存的响应

尝试在浏览器中禁用网络操作。下面是它在Google Chrome设置中的外观（

settings

->

Show advanced settings…

）：

---

或者，您可以将鼠标悬停在链接上，但不点击链接，从而在实际点击链接之前验证是否发送了第一个请求。

Firefox或explorer中未出现Chrome问题

媒体是否与媒体主体重叠？在这种情况下，两个链接都可能触发单击事件。否，媒体左侧和媒体正文是两个单独的div。我刚刚签入生成的HTML。路由器在哪里定义？@ExplosionPills请查看我对

publication.js

@JNevens的编辑。您可以使用一些虚拟paper.id来执行curl请求

curl{baseURL}/publication/view/#{paper.id}

，将问题缩小到前端或后端。还可以尝试记录

request.url

，在某些情况下，会发出一个额外的请求来获取favicon。我认为现在可以将此选项称为“使用预测服务更快地加载页面”？请使用注释提问