UDEMY 2021 - JavaScript Variables Lifecycles

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

You can find "Download Link" as a button at the end of this article.

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


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