Learn JavaScript - Free Interactive JavaScript Tutorial

WAVE Web Accessibility Tool Comment bien coder en Javascript ? Cet article vous montre, au travers de bonnes pratiques, comment obtenir un code Javascript non intrusif, évolutif, accessible, facilitant la maintenance et minimisant les risques d'interaction. Ce document regroupe diverses notions de base et d'autres plus avancées telles que les tests de fonctions, les variables globales, la séparation de la structure, de la présentation, du comportement voire des données, le modèle objet, les littéraux, une introduction à JSON ou encore la gestion des événements. Une bonne page web doit être consultable et entièrement fonctionnelle sans Javascript. Ce langage est optionnel du fait que tout le monde n'en dispose pas. Aussi, Javascript est principalement utile lorsqu'il s'agit d'améliorer et d'étendre le comportement de vos pages. Cela veut donc dire que vous ne disposez pas forcément de toutes les fonctionnalités de votre page si ce langage est indisponible. Mauvais code pour un lien d'impression : Imprimer Bon code pour un lien d'impression :

Learn JavaScript Online - A Guide This is an excellent open sourced series that goes deep into the JavaScript language, and it includes tutorials for ES6 as well! When authoring this book, Kyle Simpson, the primary author of this series, has received help from many JavaScript experts, including the creator of JavaScript himself. This JavaScript tutorial series aims to challenge existing preconceptions about JavaScript. While it is beginner-friendly, you have to put effort into understanding the material as well. Touting itself as 'Development for Absolute Beginners', this 21 episode video course will walk you through the fundamentals of JavaScript and eventually touch on how to use jQuery to help you understand how to integrate the function into future web applications you'll build. If you've asked people where to start learning JavaScript, chances are you've already heard of Marijn Haverbeke's book, which comes highly recommended. Learn JavaScript through fun, interactive games!

A re-introduction to JavaScript (JS Tutorial) Why a re-introduction? Because JavaScript is notorious for being the world's most misunderstood programming language. It is often derided as being a toy, but beneath its layer of deceptive simplicity, powerful language features await. JavaScript is now used by an incredible number of high-profile applications, showing that deeper knowledge of this technology is an important skill for any web or mobile developer. It's useful to start with an overview of the language's history. JavaScript was created in 1995 by Brendan Eich while he was an engineer at Netscape. Several months later, Microsoft released JScript with Internet Explorer 3. Because it is more familiar, we will refer to ECMAScript as "JavaScript" from this point on. Unlike most programming languages, the JavaScript language has no concept of input or output. Overview JavaScript is a multi-paradigm, dynamic language with types and operators, standard built-in objects, and methods. And there are some built-in Error types as well.

What & Why of Usability Home > What & Why of Usability UX Discipline (11) User experience (UX) focuses on having a deep understanding of users, what they need, what they value, their abilities, and also their limitations. It also takes into account the business... Project management focuses on planning and organizing a project and its resources. This includes identifying and managing the lifecycle to be used, applying it to the user-centered design... Web analytics is the collection, reporting, and analysis of website data. UX Overview (3) Is including user experience in project development worth the time and resources? Government agencies provide vital information and services that affect people’s daily lives.

La gestion des événements en JavaScript Cet article est une introduction aux notions nécessaires pour bien comprendre et utiliser les événements en JavaScript. JavaScript est un langage événementiel : le développeur a un contrôle limité sur le flux d'exécution du code, qui est déterminé principalement par les interactions avec l'environnement (activation d'un lien, mouvement de la souris, chargement du contenu du document, …). La gestion des événements est un sujet essentiel dans le cadre de ce langage. Elle reste pourtant assez mal comprise, en partie à cause des lacunes et erreurs d'implémentation des différents navigateurs. Le DOM niveau 0, standard de facto hérité de Netscape ; il s'agit de l'interface la plus largement supportée mais aussi la moins puissante. Les concepts présentés dans la suite de l'article sont communs à ces trois familles, sauf indication contraire. L'objet Event Un événement est un changement d'état de l'environnement qui peut être intercepté par le code JavaScript. target type stopPropagation <!

Introduction :: Eloquent JavaScript This is a book about getting computers to do what you want them to do. Computers are about as common as screwdrivers today, but they contain a lot more hidden complexity and thus are harder to operate and understand. To many, they remain alien, slightly threatening things. We’ve found two effective ways of bridging the communication gap between us, squishy biological organisms with a talent for social and spatial reasoning, and computers, unfeeling manipulators of meaningless data. The first is to appeal to our sense of the physical world and build interfaces that mimic that world and allow us to manipulate shapes on a screen with our fingers. This works very well for casual machine interaction. But we have not yet found a good way to use the point-and-click approach to communicate things to the computer that the designer of the interface did not anticipate. Human languages allow words and phrases to be combined in many ways, which allows us to say many different things. On programming

alternatives to codecademy | @myasmine Running my software company from 2009 to 2011 without a development background was challenging to say the least. It is how I became involved with GirlDevelopIt (an organization offers programming classes for women) and why I started LearnRuby101. With this post, my goal is to share the free interactive learn-how-to-code sites I’ve come across that can help you get started. I’ve also gathered the top recommended books on each language from Hacker News. For non-programmers, I would recommend reading this post by Liz Abinante titled “So, you think you want to be a web developer?”. For programmers that know one or more languages already, this is a useful list if you want to quickly dive into something new without using a compiler. Finally, for aspiring women coders Pam Selle (one of our GirlDevelopIt teachers), compiled a useful list of organizations solely focused on providing hands-on programming classes that’s worth a look. (Thanks to Owen Winkler for providing suggestions on this post).

Learn To Read Music Notes,Learning How to Play Piano at Home,Online Notes & Clefs: The table below displays the different types of notes and clefs. All definitions are located at the end of the page. Treble Clef: When reading sheet music, you will notice that there is a treble clef at the top left hand corner of your music book. Treble Clef Lines – E, G, B, D, F (Eat Good Bread Dear Father) Treble Clef Spaces – F, A, C, E (Face). Bass Clef: Beneath the treble clef on sheet music, you will see a second set of lines and spaces with the Bass Clef symbol on the left. Bass Clef Lines – G, B, D, F, A (Good, Bread, Dear, Father, Ate) Bass Clef Spaces – A, C, E, G, (Alice, Can, Eat, Grapes). Musicians must learn how to count evenly, to make sure they are playing each note for the correct length of time. Tip: To begin you may prefer to write the corresponding notes on your sheet music to help. Music Terms / Definitions for this page: Staff: A staff of music is made up of five horizontal lines and four spaces. Measure: Sheet music is divided into Measures.

Utilisez la console JavaScript des navigateurs Concevoir un site dynamique implique de faire appel à JavaScript, langage de plus en plus populaire et puissant. Afin de donner les bons outils aux développeurs web, les navigateurs se sont peu à peu équipés de consoles de développement permettant d'entrer des instructions à la volée, avec bien souvent de l'auto-complétion, de consulter les données en mémoire ou d'explorer les fonctions et variables disponibles. Des commandes plus avancées visent à définir des points d'arrêt et d'inspecter la pile des appels. La console est un outil indispensable lorsque l'on souhaite écrire quelques lignes de JavaScript, ou bien concevoir des scripts plus évolués notamment avec des frameworks tels que jQuery. Accès La console se retrouve bien souvent dans un menu orienté pour les développeurs, à l'aide d'une touche de raccourci, ou dans des extensions spécifiques telles que Firebug pour Firefox. Aperçus Internet Explorer Google Chrome Mozilla Firefox Opera Astuces Fonctions utiles Journal console.log(fruits);

You-Dont-Know-JS/ch1.md at master · getify/You-Dont-Know-JS alternatives to codecademy | @myasmine Running my software company from 2009 to 2011 without a development background was challenging to say the least. It is how I became involved with GirlDevelopIt (an organization offers programming classes for women) and why I started LearnRuby101. With this post, my goal is to share the free interactive learn-how-to-code sites I’ve come across that can help you get started. For non-programmers, I would recommend reading this post by Liz Abinante titled “So, you think you want to be a web developer?”. For programmers that know one or more languages already, this is a useful list if you want to quickly dive into something new without using a compiler. Finally, for aspiring women coders Pam Selle (one of our GirlDevelopIt teachers), compiled a useful list of organizations solely focused on providing hands-on programming classes that’s worth a look. (Thanks to Owen Winkler for providing suggestions on this post). Learning HTML/CSS Learning JavaScript Learning Python Learning Ruby/Rails Ruby