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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 1/3

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              
12

            
const  NUMBER = 58;
console.log(NUMBER);
copy

Variables declared with const are very much similar to the variables declared with the let keyword, but the only difference is that we cannot reassign values to the variables declared with the const keyword.


              
123

            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);
copy

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

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 9
toggle bottom row

bookConstant 1/3

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              
12

            
const  NUMBER = 58;
console.log(NUMBER);
copy

Variables declared with const are very much similar to the variables declared with the let keyword, but the only difference is that we cannot reassign values to the variables declared with the const keyword.


              
123

            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);
copy

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

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 9
toggle bottom row

bookConstant 1/3

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              
12

            
const  NUMBER = 58;
console.log(NUMBER);
copy

Variables declared with const are very much similar to the variables declared with the let keyword, but the only difference is that we cannot reassign values to the variables declared with the const keyword.


              
123

            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);
copy

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

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!

What are Constants?

Constants are created just like the var and let. We use the const keyword for initializing constants, for example.


              
12

            
const  NUMBER = 58;
console.log(NUMBER);
copy

Variables declared with const are very much similar to the variables declared with the let keyword, but the only difference is that we cannot reassign values to the variables declared with the const keyword.


              
123

            
const  PI = 3.141592653589793;
PI = 3.14; // error
console.log(PI);
copy

Task

Declare a variable by using the const keyword with the identifier FIXED and assign the value 10 to it also display the value on the console.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 9
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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