JSFoo 2014

JavaScript as the centerpiece of a complex web stack

In 2011, Node.js put JavaScript firmly in the backend, making JavaScript developers productive at both ends of the stack, and making it possible for business logic to finally be moved into JavaScript.

In 2012, AngularJS made us think about moving business logic completely into the client-side as an actually sensible idea. Meteor give that idea two thumbs up.

In 2013, we went wild thinking of all the possibilities. JavaScript phones! Robots!

In 2014, it’s time for some sobering up. The backends we built over a decade in Ruby and Python aren’t going away. New languages like Go and Hack are tantalising us with new possibilities. Our applications are increasingly distributed, often involving third party APIs. In such a scenario, where does your business logic reside?

In 2014, JavaScript is no longer a toothless child or a rebellious teenager that wants to do everything itself. JSFoo 2014 is about working with JavaScript as the centerpiece of a complex web stack.


This year’s edition spans four days, with two days of workshops and two days of conference. All days feature a single track. We invite proposals for:

  • Full-length 40 minute talks
  • A crisp 15-minute presentation
  • Sponsored sessions, 40 minute duration
  • Flash talks of 5 minutes duration. Submissions for flash talks will be accepted during the event
  • Three hour workshops where everybody gets their laptop out and follows along

Criteria to submit

You must be a practising web developer or designer, and must be able to show how your own work has advanced the state of the web in the past year. You are expected to present original work that your peers — this event’s audience — recognise as being notable enough to deserve a stage.

If you are excited about someone’s work and believe it deserves wider recognition, we recommend you contact them and ask them to submit a proposal.

Selection Process

Voting is open to attendees who have purchased event tickets. If there is a proposal you find notable, please vote for it and leave a comment to initiate discussions. Your vote will be reflected immediately, but will be counted towards selections only if you purchase a ticket.

Proposers must submit presentation drafts as part of the selection process to ensure that the talk is in line with the original proposal, and to help the editorial panel build a strong line-up for the event.

There is only one speaker per session. Entry is free for selected speakers. HasGeek will cover your travel to and accommodation in Bangalore from anywhere in the world for speakers delivering full sessions (30 minutes or longer). As our budget is limited, we will prefer speakers from locations closer home, but will do our best to cover for anyone exceptional. If you are able to raise support for your trip, we will count that as speaker travel sponsorship.

If your proposal is not accepted, you can buy a ticket at the same rate as was available on the day you proposed. We’ll send you a code.

Commitment to Open Source

HasGeek believes in open source as the binding force of our community. If you are describing a codebase for developers to work with, we’d like it to be available under a permissive open source license. If your software is commercially licensed or available under a combination of commercial and restrictive open source licenses (such as the various forms of the GPL), please consider picking up a sponsorship. We recognize that there are valid reasons for commercial licensing, but ask that you support us in return for giving you an audience. Your session will be marked on the schedule as a sponsored session.

Hosted by

JSFoo is a forum for discussing UI engineering; fullstack development; web applications engineering, performance, security and design; accessibility; and latest developments in #JavaScript. Follow JSFoo on Twitter more

Vani S


Use concepts of different frameworks to code

Submitted Aug 5, 2014

Libraries/Frameworks do the magic. But we can do them too. Learn behind the scenes of frameworks and learn the browser, use those concepts in your code and have lighter, well maintainable, structured code. I did code using this concept which is running live in www.goibibo.com/hotels in mobile browser. It was faster(4 times faster development time than the android app), easier and definitly possible. Moreover, it made me a better developer. I will be speaking based on this experience, in what way it was possible, what were the obstacles and the way they were overcome etc, to open the new way of thought that it is possible this way too.


I had to develop a product from scratch. I liked all the libraries, but I didn’t like to include any in the product. Every library has it’s own features. And our product might need some features from one library and other features from the other library. So I used concepts of different libraries in my code and never included libraries.

Backbone concept of chaning URL - I used history.replaceState
Object.watch, HTML5 multiselect - used a polyfill
some new concepts like, mobile backbutton for popup - hashchange
Require js - ajax loading of the file concept
Underscore Template - parse string concept
And quite a few things.

Attend this if you are facing any of these,
You are struggling to choose a framework - going over debates, pros, cons etc.
Your libraries are growing heavy.
You want to really reduce user waiting time(increase performance).
You want to use ES5/ES6, HTML5 features but you can not because of all browser support.
You want to know what exactly happens behind a js library.
If it is being too tough to maintain the written code.
To not just finish the work, but to acquire a better knowledge while finishing the work.
Just by learning the facts of how browser deals with JS engine, CSS and DOM, the page can really be fast.
You are using 2-3 or more libraries and have conflict between them.

Speaker bio

I have a 5+ years of core UI development experience. When I started, I worked on building the custom tag components in UI, then worked on writing MVC code in pure js(using different patterns as well) and currently working on creating UI by learning from the libraries and designing the code depending on the type of product.

I did give a flash talk on this in jschannel(that was held last month in Taj,Bangalore) and I preferred to give a fulltalk explaining this concept in depth.

  • open in mobile browser(not opera mini yet)
  • www.goibibo.com/hotels




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Hosted by

JSFoo is a forum for discussing UI engineering; fullstack development; web applications engineering, performance, security and design; accessibility; and latest developments in #JavaScript. Follow JSFoo on Twitter more