JavaScript’s arrays can hold heterogeneous types, change size on the fly, and readily insert or remove elements. Traditional methods like slice, splice, and push/pop do this by operating on the array ...

The whole of the JavaScript language is built on one central data structure - the associative array. Objects in JavaScript are just associative arrays and this causes a lot of confusion at first. But ...

Over three decades of development, JavaScript has grown faster, sleeker, more capable, and much more complex. That’s good and bad. It was 30 years ago today, Sgt. JavaScript taught the web to play.

Functions are objects, but we tend to forget that they are. Just like all objects in JavaScript, functions are anonymous and unlike other languages don't have immutable names. This isn't a huge ...