CCNA, CCNP, MCSA, CCNA Final Exam, All Answer Test Module With 100/100

I found something very odd today: If you create objects with a constructor function and the new keyword, but return a function from the constructor, it behaves like so:

Someone on JSPerf dropped an amazingly fast implementation for checking leap years of the ISO calendar (link: Odd bit manipulations ):

I have decided to make a new web app. The web app would be high concurrency and using Socket.io. to implement streaming data in realtime.

I'm using Node.js and wanting to incorporate CoffeeScript into my workflow. I have two use-cases: I want to be able to write JavaScript files which require() CoffeeScript modules I want to be able to load CoffeeScript modules from within the node REPL For case #1 I can just compile from .coffee to .js and require() the .js module, as a workaround. For case #2 right now I'm eval()'ing the output of coffee-script.compile(). Is there a better, more unified way to do this? Source: Tips4all

I have a question regarding the native Array.forEach implementation of Javascript: Does it behave asynchronously? For example, if I call: [many many elements].forEach(function () {lots of work to do}) Will this be non-blocking? Source: Tips4all

Besides the fact that node.js is written in JS and Tornado in Python, what are some of the differences between the two? They're both non-blocking asynchronous web servers, right? Why choose one over the other besides the language? Source: Tips4all

{ id: 1533, story_type_id: 1, content_id: 470, created_at: Sun, 05 Feb 2012 07:02:43 GMT, updated_at: Sun, 05 Feb 2012 07:02:43 GMT, type_name: 'post' } I have a JSON object with the "datetime" field like above. It's perfect. But when I stringify it (I want to store it in cache), I get this format: "created_at":"2012-02-05T07:02:43.000Z" This causes problems, because when I want to JSON.parse this, suddenly it's no longer datetime format and it's incompatible with my other format. What can I do to solve this problem? I have 'created_at' littered everywhere throughout my application. I don't want to manually change each one.

i have seen this code : var myNet = require ("net"); and in some function: function foo (x,y) { var myNewNet = new myNet(); myNewNet.createServer(x,y); } why does the code above create a new object? what is the mechanism stands behind that? one more question, how do i create a static var in node.js, for example a id number that has to be unique. i came with this option for static variable: var id =0; and put it on the global scope, is it ok?

I'm building a web app with Express and dnode and I'm trying to synchronize authentication between the two. I found the following example, but the 'sessionCheck' event doesn't appear to be firing on the connection object: http://repos.io/project/github/tblobaum/dnode-session/ Anybody have input for how to correctly synchronize auth between Express and dnode using sessions? Thanks, Matt

Is it possible to compress multiple files with UglifyJS? Something like... uglifyjs -o app.build.js appfile1.js appfile2.js ... Also, I am running Uglify via NodeJS in Windows Command Prompt