background preloader

Référence JavaScript

Référence JavaScript

Related:  NodeJSCours et Tutoriels sur le JavaScriptJSJavaScriptProgramation Web

Useful Node.js Tools, Tutorials And Resources Advertisement Created by Ryan Dahl in 2009, Node.js is a relatively new technology which has gained a lot of popularity among Web developers recently. However, not everyone knows what it really is. Node.js is essentially a server-side JavaScript environment that uses an asynchronous event-driven model. JavaScript 101 Introduction I've written this very brief guide to JavaScript just as an aid for people new to the language and who need a basic starting point to see what the syntax looks like and to get a feeling for some of its features. This article's main purpose is to give readers new to the language a glimpse of the JavaScript environment and to hopefully spur them onto further reading/learning. What is JavaScript

Comparing AngularJS and React When it comes to creating dynamic web applications, JavaScript has long enjoyed popularity among developers. And, speaking of JavaScript, both AngularJS and ReactJS are two of the most popular open source libraries for JavaScript. Both Angular and React have their own advantages and disadvantages, and while comparisons are often drawn between the two, it is nearly impossible to pick a clear winner. There are cases where Angular performs really well, especially when you require an MVC architecture. Similarly, there are times when React proves its worth, like following a one-way data flow and making the developers’ lives easier. So, what differentiates Angular from React?

Lexical grammar mots clés réservés This page describes JavaScript's lexical grammar. The source text of ECMAScript scripts gets scanned from left to right and is converted into a sequence of input elements which are tokens, control characters, line terminators, comments or white space. ECMAScript also defines certain keywords and literals and has rules for automatic insertion of semicolons to end statements. 40 Web Design Artists And 102 Websites Worth Watching I am continuing Top DeviantArtist worth watching series and now I stopped to the best web designers I could find. I only listed those artists, whom layouts I found to be really unique and inspiring, taking classical web design actually to the next level. These layouts are really artworks with amazing details, You usually don’t see browsing through the web. Consider this article as inspirational article now and if You choose to watch those artists, then inspiration blasts in long term. At first I wanted to pick only 2 website examples from each artists, but there was several so amazing webdesigns, where I couldn’t stop and picked 3 or 4 examples. Enjoy this list, hope this will help to get inspired in regular basis!

Authenticate Authenticate Authenticating requests is as simple as calling passport.authenticate() and specifying which strategy to employ. authenticate()'s function signature is standard Connect middleware, which makes it convenient to use as route middleware in Express applications.'/login', passport.authenticate('local'), function(req, res) { res.redirect('/users/' + req.user.username); }); Debugging Asynchronous JavaScript with Chrome DevTools - HTML5 Rocks Introduction A powerful feature that makes JavaScript unique is its ability to work asynchronously via callback functions. Assigning async callbacks let you write event-driven code but it also makes tracking down bugs a hair pulling experience since the JavaScript is not executing in a linear fashion. Luckily, now in Chrome DevTools, you can view the full call stack of asynchronous JavaScript callbacks! Once you enable the async call stack feature in DevTools, you will be able to drill into the state of your web app at various points in time. Walk the full stack trace for some event listeners, setInterval, setTimeout, XMLHttpRequest, promises, requestAnimationFrame, MutationObservers, and more.

Want to learn JavaScript in 2015? Now you could choose to continue reinforcing what you have already learnt or find new things to learn. I personally took a shine to Functional programming along with a library called RxJS by author and Sourcerer Matt Podwysocki. This all happened from taking a course presented by Jafar Husain, he is a very genuinely enthusiastic teacher. That to me is when I learn the best, if you are watching/interacting with a person who loves what he is doing it shows and you naturally become more interested. Console API Reference The Console API provides web applications with methods for writing information to the console, creating JavaScript profiles, and initiating a debugging session. If the specified expression is false, the message is written to the console along with a stack trace. In the following example, the assert message is written to the console only when the document contains fewer than ten child nodes:

Developers Getting Started DIY's API is open for use by any institution or individual. We only ask that you follow the content guidelines and other terms found in our TOS. #150: Hey designers, if you only know one thing about JavaScript, this is what I would recommend Sometimes, to start a journey into learning something huge and complex, you need to learn something small and simple. JavaScript is huge and complex, but you can baby step into it by learning small and simple things. If you're a web designer, I think there is one thing in particular that you can learn that is extremely empowering. This is the thing I want you to learn: When you click on some element, change a class on some element. Boiling that down to the absolute essentials, imagine we have a button and a div: <button> Click Me </button><div> I'm an element </div>

What forces layout/reflow in Chrome. The comprehensive list. What forces layout / reflow All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck. Element Box metrics Debugging JavaScript Chrome As the complexity of JavaScript applications increase, developers need powerful debugging tools to help quickly discover the cause of an issue and fix it efficiently. The Chrome DevTools include a number of useful tools to help make debugging JavaScript less painful. In this section, we will walk through how to use these tools by debugging the Google Closure hovercard demo and other dynamic examples in this page.