Course Content

Introduction to JavaScript (staging)

1. Introduction

Writing our first code Output Using Variables 1/2 Output Using Variables 2/2

2. JavaScript syntax

JavaScript Syntax JavaScript Variables JavaScript Operators Identifiers in JavaScript Naming Identifiers Reserved keywords in JavaScript Naming Convention in JavaScript. Case Styles Variables Naming Convention Boolean Naming Convention Constant Naming Convention Function & Classes Naming Convention Multiline Strings Multiline Strings. Concatenating Commenting in JavaScript Commenting in JavaScript. Multi-line Comments

Number 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());

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));

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));

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.

Task

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 desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 3. Chapter 14

Number 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());

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));

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));

Task

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 desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Section 3. Chapter 14

Number 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());

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));

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));

Task

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 desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

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());

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));

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));

Task

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 desktop for real-world practiceContinue from where you are using one of the options below

Section 3. Chapter 14

Switch to desktop for real-world practiceContinue from where you are using one of the options below