Introduction to Arrays in JavaScript

Erica Gomez, a software development manager at Amazon, introduces the concept of arrays in JavaScript. She explains how lists help organize information and how arrays can be used to manage large amounts of data efficiently. The tutorial covers creating arrays, assigning them to variables, accessing elements using indices, and the benefits of using arrays in programming.

What is Erica Gomez's role at Amazon?

• Product Owner

• Data Scientist

• Project Manager

• Software Development Manager

Why does Erica enjoy her role?

• She works on marketing strategies

• She helps junior engineers grow in their careers

• She can work from home

• She gets to travel a lot

What is a practical way to keep track of activities, ideas, or songs?

• Using a calendar

• Memorizing them

• Using sticky notes

• Writing them down in a list

Why are variables not ideal for keeping track of large amounts of information?

• They are not secure

• They are too complex

• They are too slow

• They are impractical for large or unknown quantities

What is an array in JavaScript?

• A single variable

• A function

• A string

• An ordered collection of items

What types of data can arrays hold?

• Numbers, strings, and other arrays

• Only objects

• Only strings

• Only numbers

How are items in a JavaScript array separated?

• By semicolons

• By commas

• By spaces

• By periods

What should you do every time you create a new array?

• Sort it

• Delete it

• Assign it to a variable

• Print it to the console

What is the term for the position of an item in an array?

• Index

• Box

• Cell

• Slot

What is the starting index of an array in most programming languages?

• 1

• 2

• 10

• 0