JavaScript: Scope

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Emmanuel Henri

41:28

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01 - Introduction

01 - Learn how to properly scope your variables.mp4

01:01

02 - Course prerequisites.mp4

00:27

02 - 1. Introduction to Variable Scope

01 - Setup for this course.mp4

03:24

02 - What is scope in JavaScript.mp4

02:15

03 - What are closures.mp4

02:25

04 - The different types of scope.mp4

01:26

05 - Hoisting explained.mp4

03:51

03 - 2. Global Variables

01 - What are global variables.mp4

05:11

02 - Challenge Define global variable.mp4

00:36

03 - Solution Define global variable.mp4

01:45

04 - 3. Local Variables

01 - What are local variables.mp4

04:07

02 - Challenge Define local variable.mp4

00:33

03 - Solution Define local variable.mp4

01:55

05 - 4. Block-Scoped Variables

01 - What are block-scoped variables.mp4

01:33

02 - Explore block-scoped variables with code.mp4

06:27

03 - Challenge Define letconst variables.mp4

00:46

04 - Solution Define letconst variables.mp4

03:20

06 - Conclusion

01 - Next steps.mp4

00:26

Description

JavaScript scope determines how variables can be accessed throughout your code. There are two scopes: global and local. Global variables are accessible from anywhere; local variables are accessible only from within the function or block the variables are declared. Scope can be confusing, especially when factors such as hoisting and closures enter the mix. This course provides a thorough introduction to the scope options for JavaScript variables, alongside challenges that help you practice what you've learned. LinkedIn Learning instructor Emmanuel Henri helps you properly scope your variables, mitigate the effects of hoisting, and declare local variables inside non-function code such as if statements using block scope.

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JavaScript

Emmanuel Henri

Instructor's Courses

An executive with 20+ years of experience in programming, technology, product management, design and business. Published 100+ courses.

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LinkedIn Learning is an American online learning provider. It provides video courses taught by industry experts in software, creative, and business skills. It is a subsidiary of LinkedIn. All the courses on LinkedIn fall into four categories: Business, Creative, Technology and Certifications. It was founded in 1995 by Lynda Weinman as Lynda.com before being acquired by LinkedIn in 2015. Microsoft acquired LinkedIn in December 2016.