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Introduction to JavaScript (staging)
course content

Course Content

Introduction to JavaScript (staging)

Introduction to JavaScript (staging)

1. Introduction
Writing our first codeOutput Using Variables 1/2Output Using Variables 2/2
2. JavaScript syntax
JavaScript SyntaxJavaScript VariablesJavaScript OperatorsIdentifiers in JavaScriptNaming IdentifiersReserved keywords in JavaScriptNaming Convention in JavaScript. Case StylesVariables Naming ConventionBoolean Naming ConventionConstant Naming ConventionFunction & Classes Naming ConventionMultiline StringsMultiline Strings. ConcatenatingCommenting in JavaScriptCommenting in JavaScript. Multi-line Comments
3. Data Types and Variables
What are Variables?What are Data-types?JavaScript and Type ConversionVar 1/3Var 2/3Var 3/3Let 1/2Let 2/2Constant 1/3Constant 2/3Constant 3/3Number 1/3Number 2/3Number 3/3Boolean 1/4Boolean 2/4Boolean 3/4Boolean 4/4Strings 1/5Strings 2/5Strings 3/5Strings 4/5Strings 5/5BigInt 1/3BigInt 2/3BigInt 3/3Symbols 1/3Symbols 2/3Symbols 3/3NullUndefinedNull vs Undefined

bookConstant 3/3

const Does Not Allow Hoisting

As discussed in the previous chapter, let does not allow hoisting i.e. we cannot use a variable before the declaration. Just like let we can not use hoisting with the const.it is only supported with var.


              
123

            
MYPLANET = 'earth';
console.log(MYPLANET);
const MYPLANET;
copy

Task

Rearrange the following code to display the value of SALARY on the console.

Summary:

  • We can neither change the values of the const variables through reassignment nor we can redeclare them.
  • Value should be assigned to const variables at the time of declaration.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 11
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bookConstant 3/3

const Does Not Allow Hoisting

As discussed in the previous chapter, let does not allow hoisting i.e. we cannot use a variable before the declaration. Just like let we can not use hoisting with the const.it is only supported with var.


              
123

            
MYPLANET = 'earth';
console.log(MYPLANET);
const MYPLANET;
copy

Task

Rearrange the following code to display the value of SALARY on the console.

Summary:

  • We can neither change the values of the const variables through reassignment nor we can redeclare them.
  • Value should be assigned to const variables at the time of declaration.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 11
toggle bottom row

bookConstant 3/3

const Does Not Allow Hoisting

As discussed in the previous chapter, let does not allow hoisting i.e. we cannot use a variable before the declaration. Just like let we can not use hoisting with the const.it is only supported with var.


              
123

            
MYPLANET = 'earth';
console.log(MYPLANET);
const MYPLANET;
copy

Task

Rearrange the following code to display the value of SALARY on the console.

Summary:

  • We can neither change the values of the const variables through reassignment nor we can redeclare them.
  • Value should be assigned to const variables at the time of declaration.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

const Does Not Allow Hoisting

As discussed in the previous chapter, let does not allow hoisting i.e. we cannot use a variable before the declaration. Just like let we can not use hoisting with the const.it is only supported with var.


              
123

            
MYPLANET = 'earth';
console.log(MYPLANET);
const MYPLANET;
copy

Task

Rearrange the following code to display the value of SALARY on the console.

Summary:

  • We can neither change the values of the const variables through reassignment nor we can redeclare them.
  • Value should be assigned to const variables at the time of declaration.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 11
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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