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Introduction to JavaScript (staging)
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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

Tarefa

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 desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 3. Capítulo 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

Tarefa

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 desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu feedback!

Seção 3. Capítulo 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

Tarefa

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 desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Tudo estava claro?

Como podemos melhorá-lo?

Obrigado pelo seu 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

Tarefa

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 desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
Seção 3. Capítulo 11
Switch to desktopMude para o desktop para praticar no mundo realContinue de onde você está usando uma das opções abaixo
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