Cannot read property 'parentNode' of undefined咋办

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#node.js

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  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>留言本</title>
  <link rel="stylesheet" href="/Day1/work1/public/css/bootstrap.css">
</head>
<body>
  <div class="header container">
    <div class="page-header">
      <h1>留言板列表</h1>
      <a class="btn btn-success" href="###">发表留言</a>
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  <div class="comments container">
    <ul class="list-group">
      <li class="list-group-item">不错说：对南沙健康拿到数据看定金款三 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">范家伟说：香锅还是香锅啊 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">王汪汪说：能看出来是谁发的吗 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">马化腾说：不充钱怎么变得更强 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">崔铭说：催什么催，快下课 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">王一丹说：社会我丹姐 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">王一丹说说：本仙女最美 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">技术说像个大男孩 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">气死规定说：同桌睡一下午 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">嗨嗨说：嗨嘿嘿。。 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">小明说：熟练度不规范里sure <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">打不开说：打不开评论 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">下课说：晚上吃鸡BA

 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">huahua说：heiheihei <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">KK说：恭喜WE~ <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">你好 说：坚实的覅基金卡死了看懂  <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">aaaaaaa说：有钱真的可以，猥琐以为 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">**_**说：**_** 天气好的想哭   **_** <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">嘿嘿嘿说：你好帅好帅  <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">你李哥说：你李哥还是你李哥 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">huahua说：xixiixix <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">不告诉你说：何时下课？？？ <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">嘿嘿说：吼吼！！！是阿发发发发 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">wqq说：wwwwwwwwwwwwww <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">会计法萨拉丁说：发达发生的方法 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">11111说：11111111 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">李旭辉说：我不睡觉了
我不吃鸡了
我要好好学习 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">嘿嘿嘿说：嘿嘿吼 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">哎呦我去说： <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">zaa说： <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item"> ni说：naihfdbvhgs gvsdjnd <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">邓起伟说：啦啦啦啦啦 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">黄大仙说： <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">www说：cscscs <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">fhaod ;说：jflk;sdaj 
 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">邓启伟说：我真 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">11说：写啥好嫩嗯嗯嗯呃· <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">人生啊说： <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">项毅说：我只是一只小猫咪 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">哇哇哇说：流弊流弊流弊 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">CM雪说：鸡鹅嘎和手机高仿 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">llllll说：<span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">lingin说：qqqqqq <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">关子健说：我是真的傻 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item"><span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">11说：为所欲为 接 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">啦啦说：乌拉拉拉拉拉 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">王汪汪说：您好呀~呵呵嘿嘿 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">得意的饿说：的萨芬撒是否 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">梵蒂冈说：放大格式是父 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">dfvdvf说：dfsfvgbb <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">孟尝君说 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">说：elenine <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">huahua说：a <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">王大锤说：123456 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">额图集电梯说：人具体的有就一个都感觉 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">ccc说：123123 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">abc说： <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">sadsadsada说：sdadadsasadadsad <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">dnsanda说：dsajdsajdnsa <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">啦啦说： <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">zhj说：1234456788 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">干活吧说：劶i谁知道发生的方式阿道夫 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">dsfas说：fgasdgdfghdfhgjhghkj <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">王大爷说：张大爷  你真傻 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">复活节阿富汗籍说：发挥开发空军飞机阿克苏分 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">sfesgfag说：GERAWGSDSBER <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">sdasdas说：sadasdasd <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">羊羊羊说：缺货缺货缺货缺货 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">123说：456778899 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">youhun说：123131321231 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">9999999999说：99999999999999999999 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">lalal说：啦啦啦啦啦 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">nihadfdsgf说：sfadsfaf <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">aa说：xxxxxx <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">bfiwufgw说：asdfd <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">123213说：123123123 <span class="pull-right">2017-11-2 17:11:22</span></li>
      
      <li class="list-group-item">张三说：今天天气不错！ <span class="pull-right">2015-10-16</span></li>
      
      <li class="list-group-item">张三2说：今天天气不错！ <span class="pull-right">2015-10-16</span></li>
      
      <li class="list-group-item">张三3说：今天天气不错！ <span class="pull-right">2015-10-16</span></li>
      
      <li class="list-group-item">张三4说：今天天气不错！ <span class="pull-right">2015-10-16</span></li>
      
      <li class="list-group-item">张三5说：今天天气不错！ <span class="pull-right">2015-10-16</span></li>
      
    </ul>
  </div>
</body>
</html>

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yinggai s zhey

错误是说不能读取为undefined的参数，是发表留言后抛出的错误吗，看看你的逻辑是怎样的

这个错误不是加载的页面造成的，因为html连script都没有肯定不会是页面脚本导致的错误。访问css出错因为你注释掉了加载css的分支，所有走了走后的else读取404错误页面信息的分支

是你安装的谷歌插件导致的，应该是插件要获取某个节点，但是你的页面不存在，所以得到了undefined对象，再调用parentNode出错了。目测这个插件是给video标签增加播放按钮用的，有帮助点个采纳，谢谢
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var fs=require('fs');
var http = require('http');
var server = http.createServer();
server.on('request',function (req,res){
    var currentUrl=req.url;
    if (currentUrl =='/'){
        fs.readFile('H:\\Node.js\\Day1\\work1\\view\\index.html','utf8',function (err,data){
            if(err)res.end('404 Not Found22');
            res.setHeader('Content-Type','text/html;charset=utf-8');
            res.write(data);
            res.end();
        })
    }
    else if (currentUrl =='/add')
    {
        fs.readFile('H:\\Node.js\\Day1\\work1\\view\\添加留言.html','utf8',function (err,data){
            if(err)res.end('404 Not Found22');
            res.setHeader('Content-Type','text/html;charset=utf-8');
            res.write(data);
            res.end();
        })
    }
    /*else if (currentUrl.indexOf('/public')===0)
    {
        fs.readFile('./'+currentUrl,'utf8',function (err,data){
            if(err)res.end('404 Not Found22');
           // res.setHeader('Content-Type','text/html;charset=utf-8');
            res.write(data);
            res.end();
        })
    }*/
    else
    {
        fs.readFile('H:\\Node.js\\Day1\\work1\\view\\404.html','utf8',function (err,data){
            if(err)res.end('404 Not Found22');
            //res.setHeader('Content-Type','text/html;charset=utf-8');
            res.write(data);
            res.end();
        })
    }
})
server.listen(10086,function (){
    console.log('服务器已启动，可通过：http://localhost:10086 访问测试');
})

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