JavaScript Introduction

Question 1

What are the 8 fundamental Data types in JavaScript?

Answer 1

numbers, BigInts, strings, booleans, null, undefined, symbols, and Objects.
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Question 2

What in JavaScript has properties?

Answer 2

Objects, including instances of data types, can have properties that store information. The properties are denoted with a . after the name of the object, for example: ‘Hello’.length.

Question 3

The console is an object which has built in methods\ actions.

Answer 3

Example console.log, the log is one such build in method.

Question 4

The difference between Function and Method?

Answer 4

A method is associated with an object or datatype, while a function is not.

Question 5

The 7 types of primitive data?

Answer 5

String, Integer, Boolean, null, undefined, Symbols and BigInts.

Question 6

null vs undefined data types?

Answer 6

null is a value intentionally not set, undefined is a value that is absent.