JavaScript is the original and common name applied towards most flavors of a scripting language that originated on NetScape Navigator. Use this tag for questions regarding common implementations of ECMAScript, JavaScript, JScript, etc. JS does not typically refer to its ECMA-cousin, ActionScript.

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Has Javascript developed beyond what it was originally designed to do?

I've been talking with a friend about the purpose of Javascript, when and how it should be used, etc. He quoted that: JavaScript was designed to add interactivity to HTML pages [...] ...
7
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4answers
675 views

Readability of || statements

On HTML5 Boilerplate they use this code for jQuery: <script src="//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> <script>window.jQuery || ...
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8answers
440 views

Is there a way to play the role of Javascript with any other language like C#?

Is there a way to play the role of Javascript with any other language like C#? One way came up in my head is, having silverlight installed, using C# instead of Javascript for all the client side ...
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5answers
2k views

PHP, HTML, Javascript and writing good practices

I realized I have to write down a convention specification about HTML, JavaScript and PHP coding for me and my team. In web development, just like in C++, I'm definitely a fan of indentation and ...
7
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3answers
665 views

Have they missunderstood currying or have I?

This question is similar to the question posted on Does groovy call partial application 'currying'?, but not completely the same, and the answers given there do not really satisfy me. I would ...
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5answers
494 views

Is it considered bad practice to run different JavaScript for IE

Is it considered bad practice (and how bad) to run different JavaScript for IE? Currently im writing some JavaScript and the simplist way to work arround IE quirks seems to be to check for browser ...
7
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3answers
500 views

Does javascript support numerically indexed arrays with a more optimized algorithm than an associative array?

I know that Python, Perl, Java, Lua and obviously C (as it's the only array that's in ANSI standard afaik) support faster looking of numerically indexed arrays than doing a hash lookup or anything ...
7
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5answers
5k views

Why is extending the DOM/built-in object prototypes a bad idea?

I'm looking for a definitive answer to why extending built-in prototypes is so heavily chastised in the JS developer community. I've been using the Prototype JS framework for a while, and to me doing ...
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1answer
2k views

How can NodeJS be “non-blocking”?

I'm learning NodeJS and just wanted to clarify something. In several introductory tutorials and books so far, very early on they've described Node's "non-blocking" architecture - or rather that it's ...
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3answers
348 views

How to decompose / model a chessboard

As someone new to programming, I am building a chess web application in JavaScript, both for fun and to learn more about design patterns. I keep running into a wall, which is how to decompose the ...
7
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4answers
2k views

Where to master HTML, CSS and Javascript? [duplicate]

Possible Duplicate: What should a developer know before building a public web site? I gotten interested in web-development lately. I am still a student. I learnt basics of HTML, CSS and ...
7
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3answers
783 views

Significance and role of Node.js in Web development

I have read that Node.js is a server-side javascript enviroment. This has put few thought and tinkers in my mind. Can we develop a complete data-drivent web application utilizing just JavaScript ...
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4answers
1k views

What are the best practices for rapid prototyping using exclusively HTML/CSS/JS [closed]

I'm developing a prototype of a web application. I want to only use HTML, CSS and Javascript. I prefer to use my text editor and not having to learn (or pay, for that matter) a new tool like Axure. ...
7
votes
3answers
421 views

What is your most unusual javascript concept you've ever seen?

I've learned javascript at school but since I'm working with it and study about it every day, I've found very particular aspect of javascript that I didn't know about. Which at first, was very hard to ...
7
votes
5answers
317 views

Algorithm for flattening overlapping ranges

I am looking for a nice way of flattening (splitting) a list of potentially-overlapping numeric ranges. The problem is very similar to that of this question: Fastest way to split overlapping date ...
7
votes
3answers
893 views

What common programming problems are best solved by using prototypes and closures?

As much as I understand both concepts, I can't see how can I take advantage of JavaScript's closures and prototypes aside from using them for creating instantiable and/or encapsulated class-like ...
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5answers
1k views

What are the steps to learn AJAX based web application development? [closed]

I am a complete starter in web development, as I know only basics of HTML and CSS, although I have a history of desktop development. What is the usual roadmap to get started in web apps, based on ...
7
votes
2answers
903 views

Moving all UI logic to Client Side?

Our team originally consisted of mostly server side developers with minimum expertise in Javascript. In ASP.NET we used to write a lot of UI logic in code-behind or more recently through controllers ...
7
votes
3answers
437 views

is this javascript property defaulting pattern a code smell?

In some javascript code I'm working on refactoring I've handled cases where I wanted to default an object property to true without having to go through the code-base and add the property to every ...
7
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2answers
5k views

Backbone/JQuery, ExtJs 4… is there something else worth looking?

Im currently evaluating a front-end architecture for a big app that will be developed by a team of about 6 developers + 1 web designer so that said, having a robust SVN friendly architecture is a ...
7
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3answers
876 views

JavaScript for a non-programmer

2 years ago I starded learning AS3 in order to get hired at a web design company. A few months later, I ditched it, because I discovered that I'm better at design; so now I'm a web designer. ...
7
votes
2answers
659 views

Is it considered bad practice to compile into Javascript as a matter of language preference? [closed]

I understand that compiling into Javascript is sometimes necessary and even in some cases results in a faster application. However I'm wondering if compiling into Javascript, for building web ...
7
votes
5answers
987 views

Language Design: Are languages like Python and CoffeeScript really more comprehensible?

The "Verbally Readable !== Quicker Comprehension" argument on http://ryanflorence.com/2011/case-against-coffeescript/ is really potent and interesting. I and I'm sure others would be very interested ...
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1answer
2k views

Legal ramifications of use of the JavaScript trademark?

It's widely known that the name "JavaScript" is trademarked by Oracle (formerly a trademark of Sun, formerly a trademark of Netscape). However, others seem to have no problem using the JavaScript ...
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6answers
1k views

Triggering custom events in AJAX callbacks

I'm pretty new to JavaScript, but one of the things that's been frustrating is that our AJAX callbacks have been getting packed with different functionality, making it difficult to keep everything ...
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2answers
690 views

If I drop cookies with JavaScript will it still be compliant with the EU ICO Cookie Law?

The challenge proposed to me as to create a widget to apply in other sites that makes a website compliant with the cookie law[1]. Can I do this without changing server code? I mean, if there's code ...
7
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1answer
104 views

Restructuring a large Chrome Extension/WebApp

I have a very complex Chrome Extension that has gotten too large to maintain in its current format. I'd like to restructure it, but I'm 15 and this is the first webapp or extension of it's type I've ...
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1answer
2k views

Why should I use Bower? [closed]

I can fully appreciate the benefits of a package manager like Python PIP, Node npm, or Ruby Gems since they're doing much more than adding files to your applications path. Maybe I'm missing the ...
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3answers
1k views

Are there open-source JavaScript libraries addressing multiple browser tabs and client state for newer browsers?

There are a few new HTML5 features that have made it into recent browsers that allow sharing state among tabs, browser windows, same domain windows, etc. So it's probably gotten a little easier to ...
7
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1answer
466 views

Defining classes in JavaScript that exist in your back-end

Doesn't it seem relatively duplicative to define your Models in your backend code AND on your front end for a rich internet application? I'm porting a GUI application I had written to have a web ...
6
votes
4answers
1k views

What is the name for a NON-self-calling function?

I have a collection of normal functions and self-calling functions within a javascript file. In my comments i want to say something along the lines of "This script can contain both self-calling and ...
6
votes
9answers
5k views

How to become an expert in Python, PHP and Javascript? [closed]

So I've been programming for about 9ish months now, and I've taught myself some Python, some PHP and some Javascript. I want to become better at these languages - I can hack something out, but a lot ...
6
votes
6answers
537 views

Returning an object or false in dynamic languages

Consider the following JavaScript function: function Foo() { function getPreferences() { if ([there is an existing preferences object]) { return preferences; } return false; } } ...
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3answers
10k views

Certifications for Javascript developers? [closed]

I'm looking for a solid and but fast paced entry in field of javascript development. The following topics come to my mind: Javascript advanced concepts, OOP jQuery, jQuery-UI, jQuery-Mobile ...
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3answers
507 views

When and Where should we use hoisting in Javascript [closed]

I'm new to Javascript. I'm learning the concept of hoisting in Javascript. Based on the Javacsript tutorials in Mozilla website, I came across this word hoisting. According to those tutorials, ...
6
votes
6answers
630 views

Would a programming certificate teach me anything? [duplicate]

I'm 16-years old, and due to being placed in accelerated programs during my whole academic career, I just finished high school over the holiday season. For the past year or so I've been teaching ...
6
votes
2answers
827 views

I want to create a new language [duplicate]

Possible Duplicate: How do I create my own programming language and a compiler for it I want to create a new general purpose language that will compile to JavaScript and I'd like to be able ...
6
votes
4answers
538 views

Could a programming language work as well without statements?

As programming in JavaScript, I've noticed everything that can be done with statements and blocks can be done with expressions alone. Can a programming language work fine with only expressions? And, ...
6
votes
4answers
747 views

Clean, Modular Code vs MV* Frameworks [closed]

I've been hearing a-lot about the "new" MV* frameworks. I've tinkered with KnockoutJS, creating an invoicing application, but I much prefer to write clean, modular code in raw JavaScript - leveraging ...
6
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4answers
1k views

What exactly undefined means in JavaScript? Why it's there? What usages it has? How it could be useful?

In JavaScript, we have something called undefined. I said something, because I really don't know if it's a base class, or a built-in variable, or a keyword, or anything else. I just know that it's ...
6
votes
7answers
717 views

What should someone learn to become a great web-app builder by 2015 [closed]

My brother just started learning some html/css at school and he loves it. He asked me to give my advice on what languages to learn in order to build great web-apps by the time he leaves school. (2015 ...
6
votes
4answers
476 views

Licensing a JavaScript library

I am developing a free, open-source (duh) JavaScript library, and wondering how to license it. I was considering the GNU GPL, but I heard that I must distribute the license with the software, and I'm ...
6
votes
3answers
919 views

Why do we need different JS for different browsers

What exactly are different things we need to take care when writing different JS files, like arrays, variables etc., Is there a book or website explaining differences between different JS engines used ...
6
votes
1answer
659 views

What Does Bubbling Mean in this Context?

This page it has the following: If we want to stop the event (e.g., prevent its default action and stop it bubbling), we can do so with the extended event object's Event#stop method: ...
6
votes
4answers
687 views

Building a web application that is almost completely rendered by Javascript, while back end only delivers Json. Do or don't?

As a programmer, and taking into account the overall "funness" of the process, I'm tempted to start a project in Sinatra where the back end's sole concern is the logic, and returning a Json API, and ...
6
votes
2answers
2k views

Common mistakes with javascript arithmetic

I've ran into several oddities using javascripts floating point arithmetic, but I can never recall them off the top of my head! What are some common mistakes when using JavaScript to do math?
6
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5answers
380 views

What does it mean for software, libraries, and languages to be asynchronous?

With popular software out today like Node.js, Celery, Twisted, and others boasting about being asynchronous, what does it mean? I've gone through the basic Node.js tutorials and written a few ...
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5answers
495 views

Are there any languages to replace or compete with Javascript? [closed]

Time and time again I am surprised at how difficult Javascript is to maintain or write proper programs in, mostly because it is so weakly typed. I truly find it akin to writing programs in assembly. ...
6
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1answer
1k views

How can I implement an EPUB reader in JavaScript?

I'm wondering if I can create an EPUB (free and open e-book standard) reader in JavaScript. The basic requirements would be: Server parts of the EPUB reader from a server API. Read the EPUB data ...
6
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2answers
887 views

Web development in a small team - best practices

Currently developing a web app in a team of two maybe three in the near future. Tech stack is at the moment : flask, mongodb, and extjs for the fontend. I currently have the project under version ...