1
JavaScript was created by Brendan Eich in 1995 at Netscape Communications, initially known as Mocha, then LiveScript, before finally being named JavaScript.
2
Primitive data types in JavaScript include undefined, null, Boolean, string, symbol, and number. Everything else is an object.
3
JavaScript is a case-sensitive, lightweight, interpreted, object-based scripting language with first-class functions.
4
The 'this' keyword refers to the owner of the function that is currently executing or the object that a function is a method of.
5
Closures give inner functions access to an outer function's scope even after the outer function has finished executing.
6
Cookies can be created, read, and deleted using the document.cookie property.
7
HTML elements can be accessed in JavaScript using methods like getElementById, getElementsByClassName, getElementsByTagName, and querySelector.