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Please enable JavaScript in your browser settings or update your browser.Symbols 2/3 | Data Types and Variables
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

bookSymbols 2/3

Symbol() Function Description:

We can provide a description to the Symbol() function as an optional argument. This description will make our symbols more clear.

The following example creates two symbols: firstName and lastName with values Michael and Clarke respectively:


              
1234

            
let firstName = Symbol('Michael');
console.log(firstName.toString());
let lastName = Symbol('Clarke');
console.log(lastName.toString());
copy

Task

Create a symbol with the value key and store it in the variable password. Output the result.

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Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 3. Chapter 28
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bookSymbols 2/3

Symbol() Function Description:

We can provide a description to the Symbol() function as an optional argument. This description will make our symbols more clear.

The following example creates two symbols: firstName and lastName with values Michael and Clarke respectively:


              
1234

            
let firstName = Symbol('Michael');
console.log(firstName.toString());
let lastName = Symbol('Clarke');
console.log(lastName.toString());
copy

Task

Create a symbol with the value key and store it in the variable password. Output the result.

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 28
toggle bottom row

bookSymbols 2/3

Symbol() Function Description:

We can provide a description to the Symbol() function as an optional argument. This description will make our symbols more clear.

The following example creates two symbols: firstName and lastName with values Michael and Clarke respectively:


              
1234

            
let firstName = Symbol('Michael');
console.log(firstName.toString());
let lastName = Symbol('Clarke');
console.log(lastName.toString());
copy

Task

Create a symbol with the value key and store it in the variable password. Output the result.

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!

Symbol() Function Description:

We can provide a description to the Symbol() function as an optional argument. This description will make our symbols more clear.

The following example creates two symbols: firstName and lastName with values Michael and Clarke respectively:


              
1234

            
let firstName = Symbol('Michael');
console.log(firstName.toString());
let lastName = Symbol('Clarke');
console.log(lastName.toString());
copy

Task

Create a symbol with the value key and store it in the variable password. Output the result.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 28
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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