JavaScript Concepts

Internal

• JavaScript

Subjects

• Type System
• JavaScript Classes
• JavaScript Functions
• Hoisting

Miscellanea

Strict Mode

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode

In strict mode the code is subject to stricter syntax for increased performance, some otherwise silent errors will be thrown, and certain keywords are reserved for future versions of ECMAScript.