小编Joã*_*imo的帖子

直接来自节点REPL:

> d1 = {key : "value"}
{ key: 'value' }
> d2 = {"key" : "value"}
{ key: 'value' }
> d1 == d2
false

为什么d1与d2不同？

从节点REPL:

> JSON.parse('{"key" : "value"}')
{ key: 'value' }
> JSON.parse('{key : "value"}')
SyntaxError: Unexpected token ILLEGAL
    at Object.parse (native)
    at [object Context]:1:6
    at Interface.<anonymous> (repl.js:171:22)
        at Interface.emit (events.js:64:17)
    at Interface._onLine (readline.js:153:10)
    at Interface._line (readline.js:408:8)
    at Interface._ttyWrite (readline.js:585:14)
    at ReadStream.<anonymous> (readline.js:73:12)
    at ReadStream.emit (events.js:81:20)
    at ReadStream._emitKey (tty_posix.js:307:10)

我需要确保一些提交的代码具有一个名为mapfndefined 的函数,并且该函数返回一个结果.我提出了以下正则表达式: mapfn\s+?\=\s+?function\s+?\(split\)\s+?\{.+?return\(result\).+?\}匹配类似的东西

mapfn = function (split) {
    var i = 5+4;
    for (var j = 0; j < 10; j++) {
        i += j*Math.random()*10;
    }
    var result = i;
    return(result)
}

这是可取的但是如果我使用这个代码来获得一个示例闭包编译器并获得类似的东西mapfn=function(){for(var b=9,a=0;a<10;a++)b+=a*Math.random()*10;return b};,那么正则表达式是无用的.此外,用户提交类似的东西

function mapfn (split) {
    var i = 5+4;
    for (var j = 0; j < 10; j++) {
        i += j*Math.random()*10;
    }
    var result = i;
    return(result)
}

然后正则表达式也没用.

对于这个问题,我觉得有一个更优雅的解决方案,而不是为这个工作提供5或6个正则表达式并尝试匹配其中任何一个.

如何在为Node.JS编写的TCP服务器中实现类似于HTTP Basic身份验证的内容？基本TCP服务器的代码如下:

// Load the net module to create a tcp server.
var net = require('net');

// Setup a tcp server
var server = net.createServer(function (socket) {

  // Every time someone connects, tell them hello and then close the connection.
  socket.addListener("connect", function () {
    console.log("Connection from " + socket.remoteAddress);
    socket.end("Hello World\n");
  });

});

// Fire up the server bound to port 7000 on localhost
server.listen(7000, "localhost");

// Put a friendly message on the terminal
console.log("TCP server listening on port 7000 …