Modern JavaScript from the Beginning - Second Edition - Variables and Constants
Interactive Video
•
Information Technology (IT), Architecture
•
University
•
Practice Problem
•
Hard
Wayground Content
FREE Resource
Read more
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which keyword is not commonly used for declaring variables in modern JavaScript?
function
const
let
var
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main reason for introducing 'let' and 'const' in ES6?
To simplify syntax
To manage scope better
To enhance security
To improve performance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What error occurs if you try to use a 'let' variable before it is initialized?
SyntaxError
ReferenceError
TypeError
InitializationError
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a valid variable name in JavaScript?
1name
name1
name-1
name*1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the naming convention called where the first letter of each word is capitalized except the first word?
kebab-case
snake_case
camelCase
PascalCase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if you try to reassign a 'const' variable?
It reassigns the value
It creates a new variable
It silently fails
It throws an error
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you add a new element to a 'const' array?
Reassign the array
Directly assign a new value
Use the push method
Use the pop method
Access all questions and much more by creating a free account
Create resources
Host any resource
Get auto-graded reports

Continue with Google

Continue with Email

Continue with Classlink

Continue with Clever
or continue with

Microsoft
%20(1).png)
Apple
Others
Already have an account?
Similar Resources on Wayground
Popular Resources on Wayground
7 questions
History of Valentine's Day
Interactive video
•
4th Grade
15 questions
Fractions on a Number Line
Quiz
•
3rd Grade
20 questions
Equivalent Fractions
Quiz
•
3rd Grade
25 questions
Multiplication Facts
Quiz
•
5th Grade
22 questions
fractions
Quiz
•
3rd Grade
15 questions
Valentine's Day Trivia
Quiz
•
3rd Grade
20 questions
Main Idea and Details
Quiz
•
5th Grade
20 questions
Context Clues
Quiz
•
6th Grade
Discover more resources for Information Technology (IT)
18 questions
Valentines Day Trivia
Quiz
•
3rd Grade - University
12 questions
IREAD Week 4 - Review
Quiz
•
3rd Grade - University
23 questions
Subject Verb Agreement
Quiz
•
9th Grade - University
5 questions
What is Presidents' Day?
Interactive video
•
10th Grade - University
7 questions
Renewable and Nonrenewable Resources
Interactive video
•
4th Grade - University
20 questions
Mardi Gras History
Quiz
•
6th Grade - University
10 questions
The Roaring 20's Crash Course US History
Interactive video
•
11th Grade - University
17 questions
Review9_TEACHER
Quiz
•
University