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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71 views

Reducing code complexity for an interface between angular and d3

I'm playing around with different ways of integrating d3 and angular, in the context of learning both of these frameworks, and am hoping for some input: My client application receives a JSON array ...
-1
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1answer
80 views

gnu lesser general public license question [closed]

I have a question about Thingiviews license. I have a site that has to do with 3D Printing, it is not done yet but I was wondering if I would be able to use it on my site, The big reason I am asking ...
0
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1answer
166 views

Application use on website

Is there a good way to run a C# application on clientside in lieu of JavaScript? I have done some front end work with JavaScript and backend C# for web developing at an old job, but I am interested in ...
0
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0answers
130 views

Reusable and customizable charting library on top of d3js

I have started building a charting library on top of d3js using javascript's inheritance. My goal is to develop reusable and fully customizable chart components. I read the article: Towards Reusable ...
0
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2answers
115 views

Image coordinates calculation algorithm

I was looking at Jcrop library code for scaled image size calculation, but I couldn't clearly understand algorithm used in following function: ...
-2
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2answers
95 views

Javascript: Anonymous functions [closed]

How do I turn this definition of an anonymous function, An anonymous function is a function that is assigned to a variable. Anonymous functions are also used when you want to perform a short and ...
1
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3answers
208 views

what is the javascript internal data structure?

Consider a basic js object: var obj={x:1,y:'2'}; Is this stored internally as a hashtable or does js use a different mechanism for key value pairs? If they are hash tables does anyone know how they ...
0
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1answer
136 views

Browser security and payments

I've been finding a lot of blog posts claiming JS encryption is unsafe, here's a couple of detailed ones: http://www.matasano.com/articles/javascript-cryptography/ ...
32
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2answers
2k views

Strategy for generating unique and secure identifiers for use in a “sometimes offline” web app

I have a web based project that allows users to work both online and offline and I'm looking for a way to generate unique ids for records on the client side. I'd like an approach that works while a ...
-1
votes
1answer
214 views

How to make C# methods work like javascript functions? [closed]

I'll keep it simple, I want to make C#'s methods work like javascript's functions. Mainly so I can convert this - function makeVariable(terp) { var me = {value: 0}; return function () { ...
2
votes
1answer
86 views

equivalence in callback and non-callback javascript

I'm pretty sure that the following two snippets are equivalent but I wanted to double check: CALLBACK STYLE function foo(input, callback) { // do stuff with input callback(); } function ...
0
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0answers
51 views

Using JavaScript to find the correct offset in bundled files

I am currently making multiple parsers using PEGjs and have implemented my own partial preprocessor which using a RegExp finds and replaces '#include' directives with the desired files, resulting in a ...
-1
votes
1answer
56 views

What would be some ways to make a map app with a sidebar for sampling live music? [closed]

I'm a beginner developer with an idea but unsure the best technology to use to build it. [IF THIS IS THE WRONG PLACE, PLEASE KINDLY COMMENT AND I'LL PULL IT!] I'd like to make a simple app that has a ...
14
votes
2answers
535 views

Creating nested functions for purely aesthetic reasons?

I've always wondered what other programmers think about the idea of creating pure aesthetic functions. Say I have a function that processes a chunk of data: Function ProcessBigData. Say I need ...
0
votes
1answer
217 views

What is the recommended approach for helper functions in JavaScript?

What is the recommended approach for helper functions? I would like to choose one technique, and run with it to create my new "class". Here are the design options I have pondered: Option 1: Helper ...
52
votes
3answers
4k views

Why do JavaScript frameworks/libraries have functions which already exist in pure JavaScript?

I wonder why frameworks/libraries have their own helpers although they exist natively already. Let's take jQuery and AngularJS. They have their own each iterator functions: jQuery.each() ...
0
votes
1answer
98 views

JSON - Ruby objects key naming

Ruby object has method/property: def tentakles_count 8 end JavaScript object has key/property: { justEnough: true } Now, when JavaScript gets serialised ruby object via XHR or WebSocket, ...
1
vote
0answers
177 views

What are the practical applications of nashorn [closed]

Oracle is putting a lot of effort into supporting Javascript on JVM. Rhino was quite capable as a JS engine, yet Oracle saw the need to create Nashorn and optimize it extensively to match V8's ...
0
votes
2answers
121 views

Minified version of JavaScript library under LGPL used on a site without copyright notice

On this site hackfind.com the autor put minified version of my library without any copyright notice. Is this violation of the LGPL. Note that using on a site is not a copy.
0
votes
1answer
105 views

What are security advantages of Google Caja over using the web worker API? [closed]

I am currently looking into Google Caja to run user-supplied JS code in the browser and in Node. So far, I understand, that, in a browser context, "cajoled code" disallows reading and messing with ...
1
vote
2answers
268 views

Developing a dynamic site with Node.js [closed]

I'm trying to get some pointers on what the best methodology to follow for a web application would be. First, some background: I've built two different APIs using Node.js where Node serves the data ...
0
votes
1answer
124 views

design patterns in Javascript - toggle functionality [duplicate]

My goal is to add some functionality to the bxslider script - in this case, I want to be able to enable/disable a keyboard event handler AFTER a slider is instantiated. I guess this code is self ...
-3
votes
1answer
46 views

Text field Form [closed]

I have 2 forms that have text input fields. One is written in JavaScript and the other in ASP NET. I would like to prevent a single symbol, the dollar or string "$" symbol from being entered into the ...
2
votes
2answers
495 views

Why do concurrent languages tend to have more complicated syntax?

This is a question that's been on my mind for a while. Recently I've been checking out concurrent languages like Haskell or Go or Erlang. From my point of view, they have huge benefit in performance ...
0
votes
2answers
88 views

Intermittent flickering on mouse move [closed]

We have an internal website that is written in javascript and jquery and is only used in with ie8. Everything is fine but after a certain time, screen flickering starts to occur when the mouse ...
0
votes
2answers
136 views

Blocks of Javascript in Web Pages

I'm trying to find the best patterns for javascript usage in my sites, and in doing so I tend to look at source code at some sites (meetup.com, facebook.com, etc). One thing that sticks out at me is ...
0
votes
1answer
61 views

Preference to see if a field's value was changed js or linq object?

We have some requirements to send emails when various field values are changed in our system. It's an asp.net system using linq to sql with javascript/jquery. Is it preferred to check if a value ...
0
votes
1answer
155 views

Best practice for storing information from a php script for future use

My employer uses forms to help people search for products. The product lists can change from time to time and the forms need to be updated again. The product information can be accessed through a ...
1
vote
1answer
143 views

Is parsing a submitted JSON object safe?

I have a RESTful API, built in NODE.js that does what you would expect it to: consumes data and then makes it accessible. Currently, data being submitted to my server is nested form data: ...
2
votes
0answers
83 views

Local Updates in Persistent/Immutable Data Structures

I'm getting into ReactJS and am intrigued but also confused about persistent data structures. I love the idea, but I'm not sure how to take my MV*, Mutable, Observable Bindings experience in designing ...
1
vote
2answers
69 views

JavaScript: Bundle a required, but common, polyfill in my library?

First, here are a couple of related, but not-quite-the-same questions: Should I include dependencies for which I have the source as projects in my solution? Depending on another open source library: ...
24
votes
5answers
2k views

Tight Coupling Between Javascript, HTML, and CSS: A More Modern Approach?

It's very common to see Javascript bound to certain selectors to find elements, store data, and listen for events. It's also common to see these same selectors used for styling. jQuery (and its ...
1
vote
1answer
109 views

How does user confirmation box work?

How does the client know to send request to server only when the confirmation box result is ok and stay on page if cancelled? Also, is this mechanism any different in ASP.Net and ASP.Net MVC? I want ...
0
votes
0answers
99 views

Best practices in creating JavaScript styling API's: Balancing CSS and JavaScript

I have written a number of components for Durandal--DatePicker Widget, Tabs Widget, Radio Widget, etc. I'm having a little conceptual difficulty in how best to balance a styling API with CSS. For ...
6
votes
3answers
505 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, ...
0
votes
2answers
399 views

Understanding Front End vs Back End Javascript?

I've been noticing lately, as I've played around with javascript, HTML5, and node.js for the first times that javascript seems to be a language that is used very differently (and with different ...
3
votes
1answer
122 views

Architecture for a template-building, WYSIWIG application

I'm building a WYSIWYG designer in Ember.js. The designer will allow users to create campaigns - think MailChimp. To build a campaign, users will choose an existing template. The template will have a ...
0
votes
1answer
70 views

how to manage new private variables introduced into class?

Whenever I want to add a new functionality, I introduce a new private variable into the class. Declare it just above the first method definition. leave a small comment. Set it in a certain method. And ...
0
votes
1answer
111 views

Building an organization-specific XML editor in HTML

I'm building a user friendly XML editor in HTML/JS. Looking for some general advice on how to build the editor UI and which approach you'd recommend on mapping the data to the UI. Details about the ...
0
votes
1answer
128 views

Twitter Bootstap: Backwards compatibility? [closed]

I work for a university Digital Services team. Our university's main website uses the Ektron CMS (I have my own thoughts about this, but that's irrelevant). Because we maintain a university website, ...
1
vote
3answers
267 views

What is the real difference between a minified and uncompressed file? What are the benefits of each?

I often see something like "uncompressed for development / minified for production" when reading blogs or downloading frameworks. What is the real difference between the two, and if minified is "good ...
2
votes
1answer
91 views

A* with possible multiple paths

Greetings I am currently studying pathfinding and I came across A* algorithm from this site https://github.com/qiao/PathFinding.js I tried to test A* with bi-directional and it is working great. ...
1
vote
2answers
188 views

Testing a very specific function in a large, complex application

I'm new to testing but wholeheartedly realize how important it is. The main issue is that my company has no top-down support for testing at all. That is we don't have any unit testing and just a bit ...
3
votes
2answers
163 views

messaging class and global state

This is a front end project that is using socket.io for all communication with the server. This allows for push which is good, but recently we have been asked to provide a pause button. The pause ...
0
votes
2answers
133 views

Proper way to structure JSON for front-end consumption

Having worked on several different web application code bases, I've seen some divergence in how back-ends serving JSON to front-ends structure that data. In particular, when a backend wants to return ...
0
votes
1answer
296 views

How does jQuery's mechanism of event handlers work

I'm in the need of widen my perspective on the framework libraries, to be able to make well aware choices of if/which/when to add a framework to a website. One thing that got my attention was event ...
0
votes
3answers
169 views

When/Where to create/assign event handlers to its elements

Lets say I have the following code // JS $(function(){ $('[data-mc=logout]').click(function(){ if (!confirm(myconfig.msg['asklogout'])) { return false; ...
1
vote
1answer
194 views

Global vs Individual object event handlers

Lately I've been studying a lot of javascript samples, both with/without libraries, jQuery to mention one. As an old JavaScript developer, I learned early to make use of unobtrusive javascript where ...
2
votes
3answers
421 views

Reasons for moving from pure JavaScript to a JavaScript library

Being aware of the direct benefits of libraries having things wrapped in a package, making daily work easier, my question is leaning more towards the fact that many features not implemented in ...
4
votes
5answers
243 views

Using π, φ, λ etc. as variable names while programming? [duplicate]

This is a function in the d3.v3.js file (the graph library D3.js): function d3_geo_areaRingStart() { var λ00, φ00, λ0, cosφ0, sinφ0; d3_geo_area.point = function(λ, φ) { ...