About

Hello. I’m Jani Hartikainen, and this is my website.

On this site, I mostly write about Programming, with a particular focus on JavaScript, Web Development and topics related to those, but there might be occasional content about other things as well.

I’ve been programming for over 20 years professionally, working with companies ranging from the likes of Nokia to smaller startups. On the side I like to dabble with game development and content creation - if you’ve been visiting this site longer, you might’ve seen me talk about my old unit testing video course.

When I wrote more actively around 2015, you might’ve seen my writing featured in places like SitePoint (All my SitePoint articles), AirPair or Packt Publishing.

Some of my most popular articles:

• What's the difference between Unit Testing, TDD and BDD?
• what are unit testing integration testing and functional testing
• Sinon.js quick tip: How to stub/mock complex objects, such as DOM objects
• Best practices for building embeddable widgets