JSFoo: round the year submissions

JSFoo: round the year submissions

Submit talks on JavaScript and full stack engineering round the year

Make a submission

Submissions are closed for this project

Submit talks and workshops on:

  1. Full stack engineering
  2. JavaScript frameworks
  3. Architecture approaches and case studies
  4. JavaScript and IoT
  5. Web development
  6. JavaScript for hobbyists

We will find a forum to place your talk, any time during the year.

For more information, contact jsfoo.editorial@hasgeek.com or call 7676332020

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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

Marcos Iglesias


Performance Budgets: The what, why and how

Submitted Oct 25, 2018

Are too many design and product considerations bringing you down? Learn how to simplify the conversation around feature development with Performance Budgets! In this talk, you’ll hear about why they are useful, how to set them up, track them and use them to keep your site performance under control!


  • Problem statement
  • What is a Performance Budget?
  • Why use Performance Budgets?
    • Users
    • Web Engineers
    • Designers
    • Product Managers
    • Engineering Managers
  • How to use Performance Budgets
  • Setting Performance Budgets
    • Strategies
    • Metrics
    • Choosing values
  • Examples of Performance Budgets
  • Tracking Performance Budgets
  • Summary

Speaker bio

Marcos Iglesias is a Senior Software Engineer who builds compelling user interfaces at Eventbrite. Marcos is passionate about improving web performance, setting performance budgets and tracking them because “web performance matters!”

On top of all that, he enjoys writing about software, giving talks and maintaining Britecharts, the open source charting library.



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Marcos Iglesias

React, D3 and their ecosystem

React and D3 are UI tools designed for goals that sometimes collide. Both take control of the DOM in different ways. How can we make them work together? We will see how to build React projects with the power of D3, using different techniques and the best libraries for your work or side projects. more

25 Oct 2018