Given two JavaScript objects, return an object that represents the properties of the second that are different. This is a 1-way diff; the diff does not contain the "old" values. This diff algorithm ...

Object.freeze() has restrictions in that it only secures the immediate object level, hence nested objects require recursive freezing to ensure total immutability.

Have you ever wished there was a query language for sifting, filtering, and sorting deeply-nested JSON or Js objects to find exactly the values you're looking for? That language already exists, and it ...

Built-in JavaScript objects and functions are ones you'll use all the time. Here's how to use Object, JSON, String, Math, Date, and console in your JavaScript programs.