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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

bookNumber 3/3

Other Math Functions

JavaScript has a library by the name of Math that has many built-in mathematics functions and methods. Let’s look at a few of them.

  • Math.random():
    The Math.random() is a function in JavaScript, that gives random numbers between 0 and 1 but not including 1, for example.

              
123

            
console.log(Math.random());
console.log(Math.random());
console.log(Math.random());
copy

As you can see we get three different numbers between 0 and 1.

Note:
You may get different output as Math.random() gives random numbers.

  • Math.max() and Math.min():
    The Math.max() returns the greatest number of all the numbers passed in as an argument while Math.min() returns the smallest one.

              
12

            
console.log(Math.max(3, 5, -10, 100, 1));
console.log(Math.min(1, 2, 6, 0, -15));
copy
  • Math.pow(base, power):
    The Math.pow(base, power) returns base raised to the given power, for example.

              
1

            
console.log(Math.pow(2, 10));
copy

Task

The task is to find the volume of a cylinder. The radius and height variables are given to storing the radius and the height of the cylinder. The formula for the volume of the cylinder is:
V = πhr²
where π is the Math PI having the value of 3.1415, r is the radius, and h is the height. Your task is to create a new const variable named PI and store 3.1415 in it and implement this formula storing the result in a variable named volume.

Summary

  • JavaScript provides the facility of rounding numbers.
  • We can check whether a variable is finite or infinite through the isFinite() function.
  • We can check whether a variable is a number or not through the isNaN() function.
  • The Math.random() function is used to get a random numeric value from 0 to 1(excluding 1).

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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Thanks for your feedback!

Section 3. Chapter 14
toggle bottom row

bookNumber 3/3

Other Math Functions

JavaScript has a library by the name of Math that has many built-in mathematics functions and methods. Let’s look at a few of them.

  • Math.random():
    The Math.random() is a function in JavaScript, that gives random numbers between 0 and 1 but not including 1, for example.

              
123

            
console.log(Math.random());
console.log(Math.random());
console.log(Math.random());
copy

As you can see we get three different numbers between 0 and 1.

Note:
You may get different output as Math.random() gives random numbers.

  • Math.max() and Math.min():
    The Math.max() returns the greatest number of all the numbers passed in as an argument while Math.min() returns the smallest one.

              
12

            
console.log(Math.max(3, 5, -10, 100, 1));
console.log(Math.min(1, 2, 6, 0, -15));
copy
  • Math.pow(base, power):
    The Math.pow(base, power) returns base raised to the given power, for example.

              
1

            
console.log(Math.pow(2, 10));
copy

Task

The task is to find the volume of a cylinder. The radius and height variables are given to storing the radius and the height of the cylinder. The formula for the volume of the cylinder is:
V = πhr²
where π is the Math PI having the value of 3.1415, r is the radius, and h is the height. Your task is to create a new const variable named PI and store 3.1415 in it and implement this formula storing the result in a variable named volume.

Summary

  • JavaScript provides the facility of rounding numbers.
  • We can check whether a variable is finite or infinite through the isFinite() function.
  • We can check whether a variable is a number or not through the isNaN() function.
  • The Math.random() function is used to get a random numeric value from 0 to 1(excluding 1).

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 14
toggle bottom row

bookNumber 3/3

Other Math Functions

JavaScript has a library by the name of Math that has many built-in mathematics functions and methods. Let’s look at a few of them.

  • Math.random():
    The Math.random() is a function in JavaScript, that gives random numbers between 0 and 1 but not including 1, for example.

              
123

            
console.log(Math.random());
console.log(Math.random());
console.log(Math.random());
copy

As you can see we get three different numbers between 0 and 1.

Note:
You may get different output as Math.random() gives random numbers.

  • Math.max() and Math.min():
    The Math.max() returns the greatest number of all the numbers passed in as an argument while Math.min() returns the smallest one.

              
12

            
console.log(Math.max(3, 5, -10, 100, 1));
console.log(Math.min(1, 2, 6, 0, -15));
copy
  • Math.pow(base, power):
    The Math.pow(base, power) returns base raised to the given power, for example.

              
1

            
console.log(Math.pow(2, 10));
copy

Task

The task is to find the volume of a cylinder. The radius and height variables are given to storing the radius and the height of the cylinder. The formula for the volume of the cylinder is:
V = πhr²
where π is the Math PI having the value of 3.1415, r is the radius, and h is the height. Your task is to create a new const variable named PI and store 3.1415 in it and implement this formula storing the result in a variable named volume.

Summary

  • JavaScript provides the facility of rounding numbers.
  • We can check whether a variable is finite or infinite through the isFinite() function.
  • We can check whether a variable is a number or not through the isNaN() function.
  • The Math.random() function is used to get a random numeric value from 0 to 1(excluding 1).

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!

Other Math Functions

JavaScript has a library by the name of Math that has many built-in mathematics functions and methods. Let’s look at a few of them.

  • Math.random():
    The Math.random() is a function in JavaScript, that gives random numbers between 0 and 1 but not including 1, for example.

              
123

            
console.log(Math.random());
console.log(Math.random());
console.log(Math.random());
copy

As you can see we get three different numbers between 0 and 1.

Note:
You may get different output as Math.random() gives random numbers.

  • Math.max() and Math.min():
    The Math.max() returns the greatest number of all the numbers passed in as an argument while Math.min() returns the smallest one.

              
12

            
console.log(Math.max(3, 5, -10, 100, 1));
console.log(Math.min(1, 2, 6, 0, -15));
copy
  • Math.pow(base, power):
    The Math.pow(base, power) returns base raised to the given power, for example.

              
1

            
console.log(Math.pow(2, 10));
copy

Task

The task is to find the volume of a cylinder. The radius and height variables are given to storing the radius and the height of the cylinder. The formula for the volume of the cylinder is:
V = πhr²
where π is the Math PI having the value of 3.1415, r is the radius, and h is the height. Your task is to create a new const variable named PI and store 3.1415 in it and implement this formula storing the result in a variable named volume.

Summary

  • JavaScript provides the facility of rounding numbers.
  • We can check whether a variable is finite or infinite through the isFinite() function.
  • We can check whether a variable is a number or not through the isNaN() function.
  • The Math.random() function is used to get a random numeric value from 0 to 1(excluding 1).

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 3. Chapter 14
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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