Articles by

Jon Bellah

Jon is a front-end engineer at TED, where he helps spread ideas worth spreading. He is passionate about all things JavaScript and hails from the beautiful city of Denver, Colorado.

@jonbellah · jonbellah.com

Finite State Machines with React

As JavaScript applications on the web have grown more complex, so too has the complexity of dealing with state in those applications — state being the aggregate of all the data that an application needs to perform its function. Over …

Jul 24, 2018 (Updated on Jan 2, 2020)

css testing phantomcss testing

Visual Regression Testing with PhantomCSS

The following is a guest post by Jon Bellah, a Lead Front End Engineer at 10up. Jon reached out to us about writing on the idea of visual regression testing, which is a form of CSS testing (i.e. …

Nov 17, 2015 (Updated on Apr 10, 2017)