An introduction to ES6 Part 1: Using ES6 Today. We like to keep up to date with the latest technologies at Global Personals and JavaScript is no exception to that. Over the next few weeks we’ll be introducing you to the evolving ES6 standard and showing you how you can start using the code of the future today. Part 1: Using ES6 Today Part 2: Block Scoping Part 3: Destructuring Part 4: Parameters and Spread Part 5: Modules and Classes Part 6: Collections Part 7: Proxies Part 8: Iterators and Generators Part 9: Arrow Functions Part 10: Other useful bits Since it’s always helpful to try out new concepts as you learn about them, we are going to look at how you can run ES6 code in modern JavaScript environments right now. Then, as we progress through the rest of the series, you’ll be able to play around with the new ideas as you read.
What is ES6? ECMAScript 6 (ES6, often referred to as “Harmony”) is the upcoming sixth major release of the ECMAScript language specification. ES6 in the browser ES6 in Node.js Transpilation An example. Larry Ullman | Modern JavaScript: Develop and Design. Welcome to the companion Web pages for the book Modern JavaScript: Develop and Design, written by Larry Ullman and published by Peachpit Press (ISBN 0-321-81252-2). The book was published in February 2012. Modern JavaScript: Develop and Design was written to teach JavaScript as a complete programming language.
The book does so using practical examples and emphasizing approaches that represent how the language should truly be used today. You’ll learn sound Web development theory, relying heavily upon unobtrusive JavaScript, progressive enhancement, and object detection, among other concepts. Other Resources Beside the handful of pages dedicated to this book, there’s plenty of other content on LarryUllman.com in which you might be interested.
Downloads You can download the code for the book using the link below. Although these scripts are named as they are in the book, they do include any updates and changes as warranted by errors that were found after publication. Complete Set of Scripts. JS Objects: De"construct"ion. JS Objects: TL;DR JavaScript has been plagued since the beginning with misunderstanding and awkwardness around its "prototypal inheritance" system, mostly due to the fact that "inheritance" isn't how JS works at all, and trying to do that only leads to gotchas and confusions that we have to pave over with user-land helper libs. Instead, embracing that JS has "behavior delegation" (merely delegation links between objects) fits naturally with how JS syntax works, which creates more sensible code without the need of helpers.
When you set aside distractions like mixins, polymorphism, composition, classes, constructors, and instances, and only focus on the objects that link to each other, you gain a powerful tool in behavior delegation that is easier to write, reason about, explain, and code-maintain. Simpler is better. JS is "objects-only" (OO). Leave the classes to those other languages! Due Thanks Complete Series Turtles Objects all the way down up Codez Plz Take this code for our main example:
Mastering The Developer Tools Console. The developer tools console is one of the most powerful tools available to you when it comes to debugging your front-end web applications. The console has an API that provides a number of methods that make debugging easier. It’s not uncommon to see developers using console.log() or console.dir() to investigate problems; but the developer tools console has a lot more to offer.
In this blog post you’re going to learn how to debug your web applications using the methods provided by the console API. Some browsers support more functionality than others so I’ll be pointing out any compatibility issues as we go. Lets get started! Using the Developer Tools Console If you haven’t used the developer tools console before, don’t worry. There are a number of different ways that you can open your browser’s developer tools. You can also launch the developer tools using a keyboard shortcut. The developer tools console in Chrome. The ‘Elements’ tab with a console pane at the bottom.
Great! Console.clear() Introduction | Human JavaScript. Code is as much about people as it is about computers. Sure, it's run by computers, but it's written by, maintained by, and ultimately created for people. People are not computers. We are not robots. We are unpredictable, flawed, and irrational. The same people with the same tools and instructions won't produce the same output each time. You can read about JavaScript, the language, elsewhere. &yet, the team I'm humbled to be a part of, is a small (~40 person) bootstrapped consulting and product company focused heavily on realtime single page web applications. As we've gone along, we've done our best to extract reusable tools out of them.
Speaking of humans, this book would not exist if not for a giant list of people who helped make it a reality. They helped with technical review, code, editorial feedback, design, writing/producing the promotional video and loads of encouragement. Let's talk about this whole "app" thing for a bit and get on the same page in terms of terminology. JavaScript. JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat. JavaScript is a prototype-based, multi-paradigm, single-threaded, dynamic language, supporting object-oriented, imperative, and declarative (e.g. functional programming) styles. JavaScript's dynamic capabilities include runtime object construction, variable parameter lists, function variables, dynamic script creation (via eval), object introspection (via for...in and Object utilities), and source-code recovery (JavaScript functions store their source text and can be retrieved through toString()).
This section is dedicated to the JavaScript language itself, and not the parts that are specific to Web pages or other host environments. Looking to become a front-end web developer? Get started. Contents. 7 steps to better JavaScript. Screencast created by Tuts+Premium in association with net magazine and Creative Bloq.
With browser performance improving, along with the steady adoption of new HTML5 APIs, the volume of JavaScript on the web is growing. Yet a single poorly written line of code has the potential to break an entire website, frustrating users and driving away potential customers. Developers must use all the tools and techniques at their disposal to improve the quality of their code to be confident that it can be trusted to execute predictably every time. This is a topic close to my heart and I've been working over many years to find a set of steps to follow during development to ensure only the highest-quality code gets released. Follow these seven steps to dramatically improve the quality of your JavaScript projects. With this workflow, fewer errors will occur and any that do will be handled gracefully, leaving users to browse without frustration. 01. 02. 03. 04. 05. 06. 07. Steps to success Words: Den Odell.
Minify JavaScript - Free JavaScript Compressor. Debugging JavaScript - Chrome DevTools. JavaScript Reference. These sections explain the elements that make up the JavaScript language. JavaScript code in Internet Explorer can interact with HTML, CSS and the Document Object Model (DOM), which represents HTML and browser objects. For information about HTML, see HTML/XHTML Reference. For information about CSS, see Cascading Style Sheets. For information about the DOM, see Document Object Model (DOM).
JavaScript code can be used in browser applications as well as Windows Store apps. Windows Store apps are supported in Windows 8 using Visual Studio 2012 and in Windows 8.1 using Visual Studio 2013. For information about JavaScript in Windows Store apps, see JavaScript roadmap. Provides a list of JavaScript language features and the Internet Explorer versions in which they were introduced. Provides a list of objects with links to information about each object. Provides a list of constants and links to information about each constant. JavaScript reference. JavaScript is a scripting language primarily used in Web applications.
It allows authors to create dynamic HTML (DHTML) pages. The JavaScript language has three components: Core JavaScript is the base part of the JavaScript language that is supported on both the client and server side. Client-side JavaScript (CSJS) contains the core JavaScript elements and has several additional objects, properties and methods that are supported by browsers. Dottoro provides you a complete standard and browser specific Core and Client-side JavaScript reference with detailed descriptions, syntax, examples, browser support information, cross-browser solutions and much more. JavaScript is primarily used for event handling, form validation, DOM and style manipulation, browser detection, animation and more. Unfortunately, client side scripting has a drawback; sometimes different browsers support different language elements. Contents: External links: Rainbow - Javascript Code Syntax Highlighting.
Secrets of the Browser Developer Tools - Secrets. An Introduciton to Firebug. Build Better Pages With Firebug. Ask web developers to name their desert island Firefox extensions (ignoring for now the improbability of having a laptop while stranded), and they’re bound to put Firebug at or near the top of their lists. Firebug is a web development tool for tweaking CSS, debugging JavaScript and more. In part, it’s like juiced-up “view source” for seeing how sites are put together.
But Firebug really shines when it’s used to streamline your own development. The extension’s slogan is “web development evolved,” which is apt, given how much it changes one’s approach to web work. Getting started: installing Firebug Installing Firebug is as easy as installing any Firefox extension. Firebug for designers The part of Firebug I use every day is more designer-oriented.
Inspect HTML and CSS The heart and soul of Firebug is the [Reference:Document Object Model | DOM] inspector. Go ahead and load up a page you want to inspect. Once the Firebug pane comes up, click the Inspect button: Firebug for front-end coders. Firebug Guide for Web Designers. Firebug — an open source web development tool extension for the Mozilla Firefox web browser — is incredibly powerful, with a wide range of super useful and practical features that would benefit any web designer or developer.
In fact, this browser extension (also available in other web browsers with limited functionality) is so useful and popular that it has browser extensions of its own. This real-time coding tool reduces the guesswork out of debugging web pages, among many other things such web page layout inspection/testing and web performance profiling, to speed up your workflow. Whether you’re building a web page, adding new CSS for a responsive web design, troubleshooting web layout issues, or inspecting how other websites are built, Firebug is going to be a valuable tool in your arsenal.
Let’s take a closer look at how this indispensable browser extension can help web designers. We’ll only focus on certain Firebug functionalities that are especially helpful for web designers. JavaScript Design Patterns and CSS Windows | Treehouse Show Ep 38. In this episode of The Treehouse Show, Nick Pettit (@nickrp) and Jason Seifer (@jseifer) talk about JavaScript Design Patterns and CSS Windows.
Here are the links for the week: JavaScript Pa Cr w csscss by zm digitalBush » Masked Input Polychart. Cypher by djave- D. JavaScript Module Pattern: In-Depth. The module pattern is a common JavaScript coding pattern. It’s generally well understood, but there are a number of advanced uses that have not gotten a lot of attention. In this article, I’ll review the basics and cover some truly remarkable advanced topics, including one which I think is original.
The Basics We’ll start out with a simple overview of the module pattern, which has been well-known since Eric Miraglia (of YUI) first blogged about it three years ago. If you’re already familiar with the module pattern, feel free to skip ahead to “Advanced Patterns”. Anonymous Closures This is the fundamental construct that makes it all possible, and really is the single best feature of JavaScript. (function () { // ... all vars and functions are in this scope only // still maintains access to all globals }()); Notice the () around the anonymous function. Global Import JavaScript has a feature known as implied globals. Luckily, our anonymous function provides an easy alternative. Module Export. JavaScript Patterns. The 10 Best JavaScript Development and Design Habits | JavaScript is an easy language to use, and a necessary one in today’s web. So much so that many developers come to JavaScript without any formal programming education.
Hence, it’s not uncommon for developers to have years of JavaScript practice (or experimentation) under their belts without ever having established some best development and design habits. In this article, Larry Ullman outlines 10 guidelines that'll help every developer code more effectively. JavaScript is a very approachable language, one that forgoes the need for the daunting compilation or installation that comes with other languages like C, Java, PHP, or Ruby. Do a little bit of research online, slap together some code, and you can probably accomplish what you need to do. In writing this article, I originally came up with a long list of suggestions, including some common and specific points such as not using the eval() function. Document Your Code! Be Consistent Test/Handle Errors Master a Text Editor or IDE Conclusion. Prefix free: Break free from CSS vendor prefix hell! -prefix-free lets you use only unprefixed CSS properties everywhere.
It works behind the scenes, adding the current browser’s prefix to any CSS code, only when it’s needed. The target browser support is IE9+, Opera 10+, Firefox 3.5+, Safari 4+ and Chrome on desktop and Mobile Safari, Android browser, Chrome and Opera Mobile on mobile. If it doesn’t work in any of those, it’s a bug so please report it. Just before you do, please make sure that it’s not because the browser doesn’t support a CSS3 feature at all, even with a prefix. In older browsers like IE8, nothing will break, just properties won’t get prefixed.
Test the prefixing that -prefix-free would do for this browser, by writing some CSS below: Properties/values etc that already have a prefix won’t be altered. It’s not ideal, but it’s a solution, until a more intuitive way to deal with these cases is added in -prefix-free. Please note that in unsupported browsers like IE8, no such class will be added. Firefox (and IE?)