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Learning Javascript with Object Graphs

Learning Javascript with Object Graphs
HEADS UP! This article was written for an older version of node. More up-to-date information may be available elsewhere. One of the secrets to being a super effective JavaScript developer is to truly understand the semantics of the language. This article will explain the basic elemental parts of JavaScript using easy to follow diagrams. References Everywhere A variable in JavaScript is simply a label that references a value in memory somewhere. Local Variables In the following example, we will create four local variables in the top-level scope and point them to some primitive values: variables.js // Let's create some local variables in the top scopevar name = "Tim Caswell";var age = 28;var isProgrammer = true;var likesJavaScript = true;// Test to see if the two variables reference the same valueisProgrammer === likesJavaScript; Notice that the two boolean variables point to the same value in memory. The outer box represents the outermost closure scope. Objects and Prototype Chains objects.js

http://howtonode.org/object-graphs

8 ways to be a better programmer in 6 minutes. 'hacka' on Sun, 08 Feb 2009 10:12:44 GMT, sez: stop using .net 'lb' on Sun, 08 Feb 2009 10:14:27 GMT, sez: Learning Javascript with Object Graphs (Part II) Static Version The first article using graphs to describe JavaScript semantics was so popular that I've decided to try the technique with some more advanced ideas. In this article I'll explain three common techniques for creating objects. The Ultimate Guide to WordPress Multisite We’ve been developing plugins for it since the old days when it was WordPress MU, and we use it to power Edublogs, a huge network of blogs for educators and students. Personally I also use Multisite a lot. I use it to host client websites, to create sites demonstrating techniques I outline in my books and tutorials, and to keep everything in one place. In this guide to Multisite I’m going to show you everything you need to know to get started with Multisite and create your own network of blogs or sites. I’ll cover:

The New Boston » Java A true story about survival in the Adirondack Mountains. The park covers 6.1 million acres, a land area greater than Vermont, or than Yellowstone, Yosemite, Grand Canyon, Glacier, and Great Smoky Mountains National Parks combined. The Adirondacks are also home to thousands of black bears, deadly snakes, and countless other dangers. Abandoned in the middle of the park with no survival experience and very few supplies, the entire journey was documented and filmed. Click here to watch the whole series! Welcome to thenewboston, the ultimate source for free video tutorials on the internet!

Learning Javascript with Object Graphs (Part III) Static Version Part I of this series explained basic object graphs and visually described references, closures, and basic inheritance in JavaScript. Part II compared different styles for doing object-oriented programming in JavaScript. Now in Part III we'll get creative and look as Ruby's object model and compare it to how JavaScript works. Also I'll show how to implement some Ruby style classes. DevDocs — Git / git add Name git-add - Add file contents to the index Synopsis 10 Puzzle Websites to Sharpen Your Programming Skills Solving programming puzzles is a fun way to develop your logical and problem solving abilities. Also, when you’re familiarizing yourself with a new programming language, solving puzzles for that language can help speed up the learning process. Here are the top 10 popular programming puzzle sites that will help test your thinking and improve your programming, problem solving, and logical thinking skills. 1. Programming Praxis Programming Praxis is a blog that includes a range of interesting problems with solutions usually available in several different programming languages.

Why use "closure"? Static Version One of the greatest features of the JavaScript language is closure. I've discussed this concept some in the "What is This?" Un e-mail en HTML responsive multi-clients - Alsacreations L'e-mail (ou newsletter) reste encore aujourd’hui un moyen efficace de transmettre des informations à ses utilisateurs ou clients. En mode texte, aucun problème, c'est un standard interprété sans difficulté. En mode HTML c'est un art ô combien délicat en partie dû au nombre de clients lecteurs d'e-mail sur le marché qui ont des comportements bien différents (encore plus désormais que les navigateurs classiques). Cette disparité de l'interprétation des e-mails au format HTML provient de plusieurs facteurs : Les clients e-mails lourds (Outlook, Thunderbird, Lotus Notes...) ont un fonctionnement radicalement différents des webmails (Gmail, Yahoo Mail, Hotmail, Outlook.com...). Ces mêmes webmails imposent des règles très strictes sur le code HTML et CSS contenu dans les e-mails car les messages sont eux-mêmes affichés dans une structure de page web qui a ses propres styles.

HTML Tutorial What is "this"? Static Version Most people that learn JavaScript are coming from a background in another language. This brings with it a view of how the world works that may be different from how it really works in JavaScript. For this and other reasons, JavaScript is often misunderstood. Prototypal Inheritance Static Version In almost all modern programming languages we use the concept of Object Oriented Programming (OOP) to help manage the complexity of today's software. The biggest challenge in modern software is in fact managing the complexity of it. Most languages do this with a variant OOP called Classical OOP. This is the one you see in Java, C#, C++, PHP, Ruby, and Python. It has the idea that classes should be separate from instances.

Control Flow in Node Static Version One of the unique aspects of programming in an async framework like node is the ability to decide between which function will run in serial and which will run in parallel. While there are no built-in methods for managing this in node, I'll discuss some of the tricks I came up with while writing the node-blog engine that generates this site. Parallel vs Serial Usually in an application you have steps that can't run until the result from a previous step is known. In normal sequential programming this is easy because every statement waits till the previous one finishes. Control Flow in Node Part II Static Version I had so much fun writing the last article on control flow, that I decided to play around with the feedback I received. One thing in particular I want to talk about is the good work inimino is doing. Node has two constructs that are used currently to handle async return values, namely callbacks and event emitters.

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