事件委托

(1)事件委托

  










    
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(2)节点操作

(3)ajax

(4)jsonp

(5)jQuery-jsonp

(6)jsonp公开接口

(7)

  /*
  NodeJS Static Http Server - http://github.com/thedigitalself/node-static-http-server/
  By James Wanga - The Digital Self
  Licensed under a Creative Commons Attribution 3.0 Unported License.
  A simple, nodeJS, http development server that trivializes serving static files.
  This server is HEAVILY based on work done by Ryan                   Florence(https://github.com/rpflorence) (https://gist.github.com/701407). I merged     this code with suggestions on handling varied MIME types found at Stackoverflow (http://stackoverflow.com/questions/7268033/basic-static-file-server-in-nodejs).
To run the server simply place the server.js file in the root of your web     application and issue the command 
$ node server.js 
or 
    $ node server.js 1234 
    with "1234" being a custom port number"
  Your web application will be served at http://localhost:8888 by default or     http://localhost:1234 with "1234" being the custom port you passed.
  Mime Types:
  You can add to the mimeTypes has to serve more file types.
  Virtual Directories:
  Add to the virtualDirectories hash if you have resources that are not children of the root directory
*/
var http = require("http"),
url = require("url"),
path = require("path"),
fs = require("fs")
port = process.argv[2] || 8888;

var mimeTypes = {
"htm": "text/html",
"html": "text/html",
"jpeg": "image/jpeg",
"jpg": "image/jpeg",
"png": "image/png",
"gif": "image/gif",
"js": "text/javascript",
"css": "text/css",  
"json":"text/json",  
"eot":"application/vnd.ms-fontobject",  
"svg":"image/svg+xml",  
"ttf":"application/octet-stream",  
"woff":"application/font-woff",  
"woff2":"application/font-woff"
  };

  var virtualDirectories = {
//"images": "../images/"
  };

  http.createServer(function(request, response) {

    var uri = url.parse(request.url).pathname
    , filename = path.join(process.cwd(), uri)
    , root = uri.split("/")[1]
    , virtualDirectory;

      virtualDirectory = virtualDirectories[root];
      if(virtualDirectory){
    uri = uri.slice(root.length + 1, uri.length);
    filename = path.join(virtualDirectory ,uri);
  }

    fs.exists(filename, function(exists) {
    if(!exists) {
  response.writeHead(404, {"Content-Type": "text/plain"});
  response.write("404 Not Found\n");
  response.end();
  console.error('404: ' + filename);
  return;
}

if (fs.statSync(filename).isDirectory()) filename += '/index.html';

fs.readFile(filename, "binary", function(err, file) {
  if(err) {        
    response.writeHead(500, {"Content-Type": "text/plain"});
    response.write(err + "\n");
    response.end();
    console.error('500: ' + filename);
    return;
  }

  var mimeType = mimeTypes[path.extname(filename).split(".")[1]];
  response.writeHead(200, {"Content-Type": mimeType});
  response.write(file, "binary");
  response.end();
  console.log('200: ' + filename + ' as ' + mimeType);
});
  });
  }).listen(parseInt(port, 10));

  console.log("Static file server running at\n  => http://localhost:" + port + "/\nCTRL + C to shutdown")