Quick JavaScript Crash Course - Modern and Advanced JavaScript - Let Const Rather than Var

Interactive Video

•

Information Technology (IT), Architecture

•

University

•

Practice Problem

•

Hard

Wayground Content

FREE Resource

The lecture discusses the issues with the 'WAR' keyword and introduces 'let' and 'construction' as replacements. 'Let' is used for block-scoped variables, ensuring correct behavior in loops. 'Construction' is used for constants, preventing reassignment. The lecture also covers the limitations of 'const' in protecting object references and suggests using the 'freeze' method for deeper protection. Best practices recommend using 'let' for variables that change and 'const' for constants.

3 questions

Show all answers

OPEN ENDED QUESTION

3 mins • 1 pt

How does the 'const' keyword protect the reference to an object in JavaScript?

Evaluate responses using AI:

OFF

OPEN ENDED QUESTION

3 mins • 1 pt

What is meant by a 'shallow freeze' in the context of JavaScript objects?

Evaluate responses using AI:

OFF

OPEN ENDED QUESTION

3 mins • 1 pt

Summarize the key takeaways regarding the use of 'let', 'const', and 'WAR' from the lecture.

Evaluate responses using AI:

OFF

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

Apple

Others

Already have an account?

Similar Resources on Wayground

2 questions

The Beginners 2022 Cyber Security Awareness Training Course - What Else Can You Do to Protect Yourself Part I

Interactive video

•

University

2 questions

HTML CSS and JavaScript for Beginners - A Web Design Course - JavaScript Code

Interactive video

•

University

2 questions

Modern Web Design with HTML5, CSS3, and JavaScript - Creating HTML Block and Inline Elements

Interactive video

•

University

2 questions

Web Hacker's Toolbox - Tools Used by Successful Hackers - How to Prevent Google Indexing from Happening

Interactive video

•

University

2 questions

Modern Web Design with HTML5, CSS3, and JavaScript - Updating and Adding jQuery Attributes

Interactive video

•

University

2 questions

Quick JavaScript Crash Course - Modern and Advanced JavaScript - Summary-catch without er

Interactive video

•

University

2 questions

Java Programming for Complete Beginners - Java 16 - Java Tip 11 - Public Static Final – Constants

Interactive video

•

University

2 questions

Robotic Process Automation - UiPath RPA Developer Masterclass - Robot #4 Solution Walkthrough

Interactive video

•

University

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

$fractions$

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