The Modern JavaScript Bootcamp (2019) - Variable Scope: Part I
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
What does the scope of a variable determine in JavaScript?
The size of the variable in memory
The initial value of the variable
Where the variable is accessible in the program
The data type of the variable
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the simple example, what is the expected output when printing 'var one'?
An error message
The string 'var two'
The string 'var one'
Undefined
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why does the program throw an error when trying to access 'var two' outside the if statement?
'var two' is defined twice
'var two' is a reserved keyword
'var two' is a constant
'var two' is not defined in the global scope
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is lexical scoping in JavaScript?
A way to define variables globally
A technique to manage memory allocation
A method to optimize code execution
A rule that determines variable accessibility based on code structure
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of code blocks in determining variable scope?
They have no role
They define the boundaries of local scope
They convert local variables to global
They increase the execution speed
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between global and local scope?
Global scope variables are accessible everywhere, local scope variables are not
Local scope variables are accessible everywhere, global scope variables are not
There is no difference
Global scope is faster than local scope
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the scope hierarchy, which variables can a local scope access?
Only global variables
Only its own variables
Variables from any scope
Its own variables and those from parent scopes
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?
Popular Resources on Wayground
15 questions
Fractions on a Number Line
Quiz
•
3rd Grade
20 questions
Equivalent Fractions
Quiz
•
3rd Grade
25 questions
Multiplication Facts
Quiz
•
5th Grade
54 questions
Analyzing Line Graphs & Tables
Quiz
•
4th Grade
22 questions
fractions
Quiz
•
3rd Grade
20 questions
Main Idea and Details
Quiz
•
5th Grade
20 questions
Context Clues
Quiz
•
6th Grade
15 questions
Equivalent Fractions
Quiz
•
4th Grade
Discover more resources for Information Technology (IT)
7 questions
How James Brown Invented Funk
Interactive video
•
10th Grade - University
5 questions
Helping Build the Internet: Valerie Thomas | Great Minds
Interactive video
•
11th Grade - University
12 questions
IREAD Week 4 - Review
Quiz
•
3rd Grade - University
23 questions
Subject Verb Agreement
Quiz
•
9th Grade - University
7 questions
Renewable and Nonrenewable Resources
Interactive video
•
4th Grade - University
19 questions
Review2-TEACHER
Quiz
•
University
15 questions
Pre2_STUDENT
Quiz
•
University
20 questions
Ch. 7 Quadrilateral Quiz Review
Quiz
•
KG - University