JavaScript is a ______ typed language.

What does the this keyword refer to when used alone?

The word "document" mainly refers to 

Which is the storage that allows the caching of web pages and their associated resources? 

How to detect and respond to mouse drags?

What will happen to the given array?

const languages = ["C", "Java", "Python"];

languages[0] = "C#";

 The purpose of extensible attribute is to __________ 

Predict the output:

const nullValue = null;

const emptyText = "";

const valA = nullValue ?? "default for A";

const valB = emptyText ?? "default for B";

console.log(valA); console.log(valB);

What is the correct way to use an iterator with a JavaScript array?