[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8},"actionData","errors","root",{"_11":-5},"routes/user.$name.topics",{"_9":10,"_11":12,"_13":14,"_15":16,"_17":18,"_19":16},"topics",[33],"user",{"_20":21,"_13":14,"_22":23,"_24":14,"_25":26,"_27":28,"_29":16,"_30":16,"_31":32},"loginname","neolii","page",1,"limit",20,"total","id","12120","avatar_url","https://avatars.githubusercontent.com/u/2621694?","githubUsername","create_at","2014-03-30 04:13:09.148","score",10,"topic_count","reply_count","is_star",false,{"_20":34,"_35":21,"_36":-5,"_37":38,"_39":40,"_41":42,"_43":32,"_44":32,"_30":45,"_46":47,"_25":48,"_49":50},"6597","author_id","tab","content","很多人在正确安装了socket.io(评判正确与否是能否运行socket.io官网上的app.js例子)之后发现在服务器端能正确运行，但是在客户端总是不能正确运行(什么都不显示并且服务器端没有类似'成功连接'的提示)，在此我只是说说我自己的理解。\r\n我的客户端和服务端的代码如下(均复制socket.io官网的例子，稍有改动，无妨碍)：\r\n\r\n`app.js`\r\n\r\n```js\r\nvar app = require('http').createServer(handler)\r\n ,io = require('socket.io').listen(app)\r\n\r\n ,fs = require('fs') \r\napp.listen(80);\r\nfunction handler (req, res) {\r\n}\r\nio.sockets.on('connection', function (socket) {\r\n socket.emit('news', { hello: 'world' });\r\n socket.on('my other event', function (data) {\r\n console.log(data);\r\n });\r\n});\r\n```\r\n\r\n`index.html`\r\n```html\r\n\r\n\r\n\r\n socket.io\r\n \r\n \r\n \r\n

socket.io

\r\n

Welcome to socket.io

\r\n \r\n \r\n\r\n \r\n\r\n```\r\n\r\n如果你能正确运行‘#node app.js’，能保证你是肯定安装成功了socket.io;\r\n问题在于你怎么打开客户端的index.html:\r\n\r\na).如果你先启动服务器端(执行`node app.js`)，然后直接双击打开index.html?你是这么打开index.html的？那么你就错了，因为当你在点击打开本地文件index.html时，执行解析此文件的是本地的浏览器，即使你电脑装了node.js，node.js也对它不闻不问，所以，这种情况下浏览器会解析\r\n```html\r\n\r\n```\r\n结果就是在本地的目录下查找`/socket.io/`目录下的`socket.io.js`文件(我的错误显示为`无法找到D:\\\\socket.io\\socket.io.js'文件`)，这当然是找不到了。\r\n\r\nb).如果你是通过浏览器地址栏敲入`http:\\\\localhost`，则这么一来会如你所愿的成功执行了，但是如果你在用a)中的方法再打开还是错误。其实错误点就在\r\n```html\r\n\r\n```\r\n这么一来是查找本地的静态目录，node.js不会管的，要把它改成服务器解析的形式，即\r\n```html\r\n\r\n```\r\n这么一来的话不管用哪种方法打开应该都没问题了。\r\n\r\n这些都是我的经历，因为这几天才开始学习web方面的知识，用恰好碰到这node.js的socket.io，各种原理概念不懂，所以犯的错也是低级的，不过每个人不都是从'hello world'开始学期的么。\r\n\r\n","title","关于socket.io客户端一个问题解答","last_reply_at","2018-09-02 04:52:57.986","good","top",3,"visit_count",5436,"2014-03-30 05:52:01.772","author",{"_13":14,"_22":23}]