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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1answer
348 views

Why is the JavaScript-language different in different programs/sites? [closed]

I'm kind of new to programming and i have a question that's been bothering me for awhile. Why is the JavaScript-language different in different programs/sites. I've used Codecademy to practice and ...
0
votes
1answer
148 views

Would it be the right software engineering system to move from AngularJS-based to jQuery-based or hybrid implementation for webapp?

I am presently working on an AngularJS-based chat webapp, and it polls the server for updates, and then renders them in what is pretty much a straight shot in AngularJS. The result looks appropriate ...
3
votes
2answers
245 views

What is the reasoning behind these design choices? [closed]

In ReactJS tutorial you are guided in the building of a commenting system. It's a very useful tutorial to understand ReactJS library, but there are some design choices I can't fully understand. So ...
3
votes
1answer
131 views

A question about static types

How would you statically type the following JavaScript program function c(str) { c = eval(str); return c(str); } I'm not trying to start a flame war but I'm genuinely curious. I've always ...
0
votes
1answer
201 views

How to tell node.js which javascript code runs on server vs client?

I am trying to learn the theory of node.js but can't seem to figure out how node.js knows whether to pre process it on the server or send it to browser for execution.
52
votes
8answers
8k views

Client-side coding: How to prevent malicious use?

Over the last few years, the trend for client-side (browser) applications has really taken off. For my latest project, I have decided to try and move with the times and write a client-side ...
2
votes
1answer
264 views

JavaScript Compression and Caching of Assets

I'm working on an idea that i can't seem to find a good answer though hours and hours of searching, I'm planning a small Canvas/WebGL Application this application will be using WebSockets to talk to ...
3
votes
0answers
256 views

JavaScript Combination Inheritance Pattern

In the chapter of Professional JavaScript for Web Developers on OOP, Nicholas Zachas describes a JavaScript inheritance pattern which he refers to as combination inheritance. The basic idea is that ...
1
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0answers
78 views

Token based autorization for a web game

I am lead developer for a multiplayer game in a small startup company. I would like to present here my solution for token based authentication and hear your opinions about possible weak spots. I am ...
8
votes
1answer
4k views

I know JavaScript really well, but i bomb coding interviews [closed]

So I'm currently on a hunt for a new position as a Front-End Developer. I know JavaScript very well and can wax poetically about Closures, Currying, Prototypal Inheritance, Design Patterns, App ...
1
vote
1answer
146 views

Object Chain through an Interface

Say I have 3+ types of objects: function Sea() { var logs = [Logs]; this.getLog = function(ind){return logs[ind]} } function Log() { var bumps = [Bumps]; this.getBump = ...
-1
votes
2answers
301 views

Whats the best way to build a HTML/AJAX site that requires login? [closed]

Let's say that hypothetically you wanted to build a website that delivered content to the visitors entirely using HTML and Javascript (AJAX to fetch server side data). The site would require login for ...
4
votes
4answers
450 views

How to write JavaScript while keeping HTML/CSS out of it

What is / are some recommended ways to write JavaScript as to control behavior of showing HTML on screen, while keeping well-maintainable code? Basically, I started to look for ways to keep HTML/CSS ...
3
votes
4answers
915 views

How to develop cross platform mobile applications with native UI and Javascript backend?

I want to build a cross platform(Android, iOS, Windows) mobile application. I want the UX of the application to be different on the different platforms so that it will be more platform specific and ...
1
vote
0answers
34 views

What's the Content-Security-Policy-friendly way to hand data from the server to the browser on page load?

When developing for the web, I often find myself wanting to pass a few variables from the server scripts to my javascript - data pulled from a database, and set differently on different pages running ...
1
vote
2answers
416 views

Why a hashtable? Why not just a non-hashed associative array?

I've been learning about using a hashtable to efficiently check for items in a list without looping through the whole thing, but there's one thing that I don't get: Why hashed keys? It seems like: ...
1
vote
2answers
2k views

Best practices / reasons for String constants in JavaScript [closed]

In static languages like Java/C#, I commonly make use of constants for strings or numbers, rather than insert them into the code alone. However, I tend to avoid this practice in JavaScript. More ...
0
votes
3answers
203 views

How should I include jQuery in a library?

I'm writing a JavaScript graphing library using canvas which I am licensing under MIT, and I'm using jQuery, as well as a couple of other open sourced libraries, all under MIT. I'm also using bower to ...
0
votes
1answer
876 views

Javascript function should call python logic in django web development without additional triiger

I have been trying to solve this problem for sometime now. This is regarding django web development. I have an HTML page which has a Javascript function to upload an image file from the users local ...
1
vote
6answers
696 views

I need a JavaScript runtime environment [closed]

I'm reading books on JavaScript programming, and I need an environment like Python's IDLE to type JavaScript commands into and then see the results like you would in IDLE. Is there an environment ...
0
votes
4answers
319 views

HTML - Alternative for ID when ID is only unique within a certain scope?

So I feel like this should be a common question but I can't find the answer. Maybe I'm using the wrong terminology. Assumptions: IDs are supposed to be unique across the document. Class attributes ...
0
votes
3answers
352 views

Simple straight-line path algorithm [closed]

I need a simple pathfinding algorithmn to go from point A to point B. A* seems like an overkill because It doesn't matter wheather I hit walls or not and there's no terrain. I was wondering if there ...
1
vote
0answers
87 views

Binding in web frameworks - to frontend data or backend data?

AngularJS and other web frameworks provide data binding abilities (as in WPF). Is the UI bound to JavaScript variables on the frontend (web browser) or is it bound to the data in the server (via AJAX ...
0
votes
1answer
393 views

When does a Monad become a hammer?

I realize my precursory understanding on Monads is severely lacking in detail considering my knowledge comes mostly from Douglas Crockford's Monads and Gonads talk and complicated with my sevear ...
5
votes
2answers
585 views

Should I group all of my .js files into one large bundle?

One of the difficulties I'm running into with my current project is that the previous developer spaghetti'd the javascript code in lots of different files. We have modal dialogs that are reused in ...
-2
votes
1answer
74 views

Deleting dynamic elements from a database [closed]

I have a select dropdown, with '+' and '-' buttons that add and remove items before submission. I would like to be able to remove the elements with the '-' button after they have been added to the ...
3
votes
2answers
214 views

Minimizability or readability?

I am authoring a lot of plugins for the content management system that I am writing. I believe it to be of utmost importance that script files (especially if they're plugins) should load quickly, ...
0
votes
0answers
167 views

Javascript and SQL Lite (multi browser offline SQL/database query)

I'm in the elections division of my county and am trying to simplify a voter lookup method for our poll judges during election time. Currently we are using a clunky heavy application that the judges ...
0
votes
1answer
193 views

Creating a voting platform for submissions during timeperiod

I have a site where stories are submitted at any time by users. The staff would like the ability to create a voting period at any time. For example, they can choose to open up voting from today until ...
1
vote
1answer
121 views

Does ES6 help grow the Ecmascript standard library?

With all the noise about EC6, one thing that I realized I haven't heard about is expanding Javascript's standard library. Javascript has a fairly sparse standard library. You need a 3rd party library ...
0
votes
2answers
153 views

Is it a good idea for JS objects to draw themselves when the page loads?

So normally I would only use JS to modify the dom after the user interacts with something or some event goes off. This seems right for some reason. But I'm developing a widget based app where widgets ...
3
votes
2answers
113 views

What's a good way to make sure that locally serialized data can be deserialized in newer code?

Context: I'm working on an HTML 5 game without persisted state. Every time you refresh the page, you start at the beginning. People are requesting that they can start where they left off if they ...
2
votes
1answer
201 views

Will this “wireless” syntax for my framework make for good code structure / design?

I'm at the point where I'm getting into the freelance development of some complex web apps, and I would like to develop a light weight framework for my personal use, but I'd like to get some advice ...
0
votes
1answer
119 views

what does it mean when a nested function isn't assigned to a var?

I'm referencing this link about closures: http://stackoverflow.com/questions/111102/how-do-javascript-closures-work This is specifically about javascript. In the second answer with 956 votes, The ...
0
votes
1answer
428 views

Dynamic query in MySQL

I'm doing a J2EE web application with Struts2, MyBatis and a MySQL database, so what I want is to allow the user to be free to choose different parameters to perform a select to a table in the ...
0
votes
2answers
320 views

Working with Javascript classes the right way

Comparable questions have surely been asked before but I'd like to hear some words about my specific way of implementing Javascript classes. Let me first start with a Javascript example taken from a ...
0
votes
0answers
521 views

Efficient development process for Golang (or any backend) and JavaScript?

I am developing a web application. The frontend is a mix between JavaScript and server-side generated html. The backend is written in Golang. Might not be very important, but if somebody made a ...
1
vote
2answers
307 views

is JS a gradually typed language?

I was researching on statically typed and dynamically typed concepts and found out there is another type system called gradually typed. From wikipedia Gradual typing is a type system in which ...
1
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2answers
281 views

Web Application: Combining View Layer Between PHP and Javascript-AJAX

I'm developing web application using PHP with CodeIgniter MVC framework with a huge real time client-side functionality needs. This is my first time to build large scale of client-side app. So I ...
-2
votes
1answer
175 views

Would you get better performances by coding an application in C, then compile to JavaScript? [closed]

I am writing an interpreter for a functional programming language that is going to run in the browser. Needless to say, performance is the one and only concern in this application. Emscripten is an ...
0
votes
1answer
183 views

best practice to inter widget communication in javascript

I have quit a lot of javascript widget and I would like to have a good decoupled way to communicate between them. Something like signals and slots in QT probably? Most of my widgets are written in ...
1
vote
2answers
197 views

Live search/filter as you type in client approach

As an exercise for myself to practice my JavaScript "skills" I'm trying to write a client-side filter. It should be able to filter "content blocks" as the user types. By "content block", I mean a ...
11
votes
5answers
1k views

Is it beneficial to study past the basics of a core language when the primary goal is to rely on its framework? [closed]

Please keep in mind this is not another 'How much [insert programming language here] should I know before moving onto [insert framework here]?' What I'd like to know is how beneficial is it to learn ...
2
votes
0answers
41 views

How do I differentiate between old and new data in backbone collections?

A common pattern I come across is a backbone collection which is initially seeded from a database. However, the user can also add to the collection. When the user does add to the collection, these ...
1
vote
2answers
183 views

How do I find the JavaScript that is invoked when I click on a button or a link in a web-page (part of a data mining project)?

I tried to use the 'inspect element' of the firebug addon for Firefox but it doesn't give me any link to the javascript. For example I got this from the firebug add-on: <a href="javascript:"> ...
0
votes
1answer
255 views

MVC data binding

I'm using MVC but I've read that MVVM is sort of about data binding and having pure markup in your views that data bind back to the backend via the data-* attributes. I've looked at knockout but it ...
0
votes
4answers
365 views

What if(event) statement means in JavaScript? [closed]

I'm rather new to JavaScript and programming in general so I am pretty much only used to seeing if statements that have some kind of comparison operator like, if (x < 10) or if(myBool). I have ...
3
votes
1answer
264 views

Caching large amount of ajax returned objects

I'm building an application which fetches large amount of items with ajax requests via other application API. It returns me 6k - 30k js objects which are used multiple times across various application ...
0
votes
2answers
179 views

Javascript Rookie Question: Define Variables Inline

I'm proficient with HTML and CSS but I'm still pretty shaky when it comes to Javascript. That said, I've been able to build a site using the Internet Archive Book Reader, which relies on reader.js ...
2
votes
3answers
327 views

Is it necessary to start variable from zero (var i = 0 ) of ' for loop '? [duplicate]

Is it necessary to start variable from zero (var i = 0) of any looping ? When should I use var i = 1; and when var i =0;?