JavaScript does not support deep-copying Objects. ES6 introduced some useful ways to do shallow-copying, like Object.assign and the spread operator, but it's important to remember these DO ...

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.

There are new array methods in JavaScript and they are here to make our programs more predictable and maintainable.