UDEMY 2021 - JavaScript Variables Lifecycles

Understand JavaScript Engine phases and lifecycles of the “var”, “let”, “const”. Scopes, hoisting, closures simplified.

What you’ll learn

Explain difference between global scope, function scope and block scope

Understand how variables declared using “var” behave

Understand how variables declared using “var” behave

Explain difference between “let” and “const”

Explain difference between “let” and “const”

Practice different variables declarations types

Understand two JavaScript Engine Phases – “Compilation” and “Execution”

Deeply understand variables lifecycle phases for variables declared using “var”, “let” and “const”

Explain lifecycle phases for the undeclared variables

Understand lifecycle of the function

Practice and understand most important variables usage guidelines

Requirements

Basic JavaScript knowledge

Fundamentals of CSS

Basic understanding of HTML

Description

Want easily explain what is hoisting?

What about closures?

In this course I will dive deep into the JavaScript and explain you what happens under the hood when you declare any variable or function. You will understand what happens on the “Compilation” and “Execution” phases in JavaScript Engine.

I will make explain you what is variable declaration, initialization and assignment that are all-together called Variable Lifecycle Phases.

We will also focus in this course on the Variables Usage Guidelines:

Make Code clear and readable for others

Always declare variables before first usage

Always use “use strict” globally

Don’t expose to the outer scopes local variables

You will also get several practical exercises where you will need to apply gain knowledge about different variables, hoisting, scopes and closures.

All exercises and code samples are available as Git repository.

Hope to see you onboard!

Who is the target audience?

JavaScript developers

Front-end developers

Full-stack developers

Created by Bogdan StashchukLast updated 10/2018EnglishEnglish [Auto-generated]

Size: 1.73 GB

Download File Here

https://www.udemy.com/javascript-variables-lifecycles/.