Three months ago, I started mentoring another developer. It went great, but I was always wondering how to quantify, or at least evaluate how good (/bad) this mentoring effort was. I am now mentoring multiple people and I want to see how their performance evolves over time, how their knowledge expands.
I stumbled upon a great collection of Front-end Job Interview Questions put together by many contributors on GitHub. For now, this post is just a subset of those questions that I like best, with answer suggestions where it feels appropriate, plus some of my own questions.