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.

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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

Manish Goregaokar


JS.next: What EcmaScript 6 means for you

Submitted Aug 6, 2014

The objective of this talk is to give an overview of important EcmaScript 6 (Harmony) features, with focus on how they can be used to improve your code.

Harmony is a set of proposed new features which have been partially implemented in many places. They improve the ergonomics of JavaScript greatly, and make it a cleaner, more powerful language. I hope the attendees of this talk will walk away with a more complete and practical toolbox for writing JavaScript for the near future.

Additionally, it would be a great benefit for the Web if ES6 was quickly adopted and used!


This session will start off with the simple stuff (for..of loops, let bindings, destructuring, const, etc).

It will then go on to what ES6 brings to functions, and how to use them (Splats/varargs, Optional arguments, the problems with this bindings and fat arrows)

From here, we will go on to the improvements it brings to Arrays and other collections (Comprehension, Spread, Map/Set/WeakMap/etc, New API methods)

Finally, we will do a deep study of Promises and generators. Generators are a new capability that have a variety of uses, a major one of which is to help unravel callback chains into procedural-esque code.


Intermediate knowledge of JavaScript. Understanding of Promises preferred, but not necessary.

Speaker bio

I’ve been programming JavaScript for a while now, ever since I was writing userscripts on Wikipedia as a kid. These days I contribute to the Firefox browser, which itself has a lot of code written in the latest (ES6) JavaScript. I’m also a committer to the Servo browser engine, and have been working with DOM internals for a while.

I love JavaScript, and am enjoying its current expansion into various fields.

I also code in Python and Rust, and PHP if I have to.


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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