nodejs-函数&路由

函数------------------------------------------------------------

基本函数

function say(word) {

  console.log(word);

}

function execute(someFunction, value) {

  someFunction(value);

}

execute(say, "Hello");

匿名函数function execute(someFunction, value) {

  someFunction(value);

}

execute(function(word){ console.log(word) }, "Hello");

路由-------------------------------------------------------------

                   url.parse(string).query

                                           |

           url.parse(string).pathname      |

                       |                   |

                       |                   |

                     ------ -------------------

http://localhost:8888/start?foo=bar&hello=world

                                ---       -----

                                 |          |

                                 |          |

              querystring.parse(queryString)["foo"]    |

                                            |

                         querystring.parse(queryString)["hello"]

router.js 文件代码：

function route(pathname) {

  console.log("About to route a request for " + pathname);

}

exports.route = route;

server.js 文件代码：

var http = require("http");

var url = require("url");

function start(route) {

  function onRequest(request, response) {

    var pathname = url.parse(request.url).pathname;

    console.log("Request for " + pathname + " received.");

    route(pathname);

    response.writeHead(200, {"Content-Type": "text/plain"});

    response.write("Hello World");

    response.end();

  }

  http.createServer(onRequest).listen(8888);

  console.log("Server has started.");

}

exports.start = start;

index.js 文件代码

var server = require("./server");

var router = require("./router");

server.start(router.route);
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nodejs-函数&路由

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