What are some JavaScript concepts that took you the longest to understand?
30th July 2013
My answer to What are some JavaScript concepts that took you the longest to understand? on Quora
Closures, prototype inheritance, and the “this” keyword.
Once you understand those three, you know most of what there is to know about the JavaScript language in my opinion (with the exception of some of the newer language features like iterators and generators).
More recent articles
- My fireside chat about agentic engineering at the Pragmatic Summit - 14th March 2026
- Perhaps not Boring Technology after all - 9th March 2026
- Can coding agents relicense open source through a “clean room” implementation of code? - 5th March 2026