如何从javascript调用node.js服务器端方法？ [英] How to call node.js server side method from javascript?

问题描述

我是node.js的新手，但我对socketstream web framework有所了解，我可以轻松地从JavaScript调用服务器端node.js方法。如果不使用该框架，我不知道该怎么做。如何从JavaScript调用node.js方法？

I'm new to node.js but I know somewhat about socketstream web framework by using this I can easily call a server side node.js method from JavaScript. I don't know how to do this without using that framework. How can I call the node.js method from JavaScript?

以下代码使用socketstream来调用服务器端方法。所以我想在不使用这个框架的情况下调用相同的服务器端方法。

The below code is using socketstream to call server side method. So I want to call the same server side method without using this framework.

ss.rpc('FileName.methodName',function(res){ 
    alert(res);         
});

推荐答案

我建议使用 Socket.IO

服务器端代码

var io = require('socket.io').listen(80); // initiate socket.io server

io.sockets.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' }); // Send data to client

  // wait for the event raised by the client
  socket.on('my other event', function (data) {  
    console.log(data);
  });
});

和客户端

<script src="/socket.io/socket.io.js"></script>
<script>
  var socket = io.connect('http://localhost'); // connec to server
  socket.on('news', function (data) { // listen to news event raised by the server
    console.log(data);
    socket.emit('my other event', { my: 'data' }); // raise an event on the server
  });
</script>

或者，你可以使用一个路由器函数来调用特定的某个函数来自客户的请求

Alternatively, you can use a router function which calls some function on specific request from the client

var server = connect()
    .use(function (req, res, next) {
      var query;
      var url_parts = url.parse(req.url, true);
      query = url_parts.query;

      if (req.method == 'GET') {
        switch (url_parts.pathname) {
            case '/somepath':
            // do something
            call_some_fn()
            res.end();
            break;
          }
        }
    })
    .listen(8080);

使用JQuery激活 AJAX 请求

And fire AJAX request using JQuery

$.ajax({
    type: 'get',
    url: '/somepath',
    success: function (data) {
        // use data
    }
})

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