JSFoo 2015

The future of JavaScript

JSFoo is India’s premier JavaScript conference. This year is the fifth edition.

The theme for the 2015 edition is the future of JavaScript.

We are looking for talks and workshops from academics and practitioners who are at the cutting edge of developments in JavaScript.

We want to hear all about:

  • Advances in browser JavaScript
  • JavaScript in hardware
  • Functional JavaScript
  • Cutting edge developments, including original work
  • ES6

Editorial panel

  • Santosh Rajan, founder Geekskool
  • Shwetank Dixit, Extensions Program Manager and Web Evangelist, Opera Software
  • Sindhu S, Recurse Center alumni
  • Zainab Bawa, editorial coordinator, co-founder at HasGeek

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.


If you are interested in conducting a hands-on session on any of the topics falling under the themes described above, please submit a proposal under the workshops section. We also need you to tell us about your past experience in teaching and/or conducting workshops.

BOF sessions

If you are interested in doing an unconference during the breakout sessions, propose a topic which will be of interest to the community.

Important dates:

Deadline for submitting proposals: 31 July 2015
Conference dates: 18-19 September
Workshops: 15, 16, 17 and 20 September

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

Ashmeet Sidhu


Building High Performance Isomorphic Web Applications

Submitted Jun 30, 2015

This talk will equip web app developers (both front and back end) to understand and build Isomorphic web apps, appreciate its philosophy, understand its caveats and be able to select the right tools for the task.


What do Airbnb and Facebook have in common? Server rendered rich client apps, or isomorphic web applications.

Server side rendering has been bread and butter for web apps since years. On the other hand client side apps promise a lot of goodies. Both come with their advantages and drawbacks. Consider SPAs, they are not as performant as pure server side apps because the rendering part is mostly handled by the client. They fail to render anything in a non JS environment such as for search bots, as a result of which SEO becomes a very tricky problem. On the other hand, traditional web apps lack a seamless experience as every action results in a page refresh.

Building a rich web application today demands that we use the best of both worlds. This talk will highlight how to approach Isomorphism in the apps you’d be building. Here is an outline of the talk -

  • Drawbacks of pure server and pure client apps
  • Progressive enhancement of UI
  • Sharing application state between client and server and possible caveats
  • Rendering on both server and client and comparison of available frameworks - React, ng2-Universal, libraries for custom solutions
  • Shared application logic for client and server and tooling required for the same - Yay Javascript!

This will be followed by a demonstration of components of an Isomorphic app built in React and Express.


A basic understanding of web application frameworks and love for separation of concerns. Understanding of React and ExpressJS will certainly help.

Speaker bio

Ashmeet works as a full-stack web developer and a lover of all things JS. He spends his time building web applications at the bleeding edge of technology at Housing.com.




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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