JavaScript Random Number

We will understand the JavaScript random number in this article. Let us first understand the Math object.

What is a Math object?

JavaScript consists of a built-in static object called "Math".

This object permits you to do mathematical calculations. It consists of some built-in methods that help to perform mathematical operations.

Syntax:

We can get the random number in JavaScript with the help of the following method:

• Math.random()
• Math.floor()

We will comprehend these methods properly with the help of demonstrations.

Math.random()

This method is utilized to return a random number between 0 and 1 which means it always returns a number smaller than 1.

Syntax:

Demonstrations:

We will look at the demonstrations to generate a random number utilizing the Math.random() method.

Demo 1:

We will get a random decimal number between 0 and 1 utilizing the Math.random() method.

Code:

Output:

We can witness the output below that has a decimal random number between 0 and 1.

Demo 2:

We will get a random whole number which will be a whole number utilizing Math.random() in this demo.

Code:

Output:

We can witness the output that consists of a random whole number.

Demo 3:

We will get a random number between a specific range utilizing the Math.random() method.

Code:

Output:

We can witness in the output that the random numbers are generated between specific ranges 5 & 10 and 1 & 50.

Demo 4:

We will get a random integer number within the range utilizing the Math.random() method.

Code:

Output:

We can witness the output that consists of a random integer number between specific ranges.

Demo 5:

We will generate a random number with the specified decimal places utilizing the Math.random() method.

Code:

Output:

We can witness the output that consists of a random number with two decimal places.

Math.floor()

It is used to round a number down to the nearest integer. It returns a random number between 0 and 1 which means a number that is always less than 1. We use Math.floor() with Math.random() to generate a random number.

Demo 1:

We will get a random number without a decimal between 0 and 10 utilizing the Math.floor() method.

Code:

Output:

We can witness the output that consists of a random number without a decimal between 0 and 10.

Demo 2:

We will get a random number without a decimal between any two numbers input by the users.

Code:

Output:

We can witness the output that shows a random number without a decimal between any two numbers input by the users.

Demo 4:

We will get inclusive random numbers between a specific range utilizing the Math.ceil(), Math.floor(), and Math.random() methods.

Code:

Output:

We can witness the output that consists of a random number without a decimal between any two numbers.

Conclusion:

We have understood the JavaScript random number in this article. We have understood how to generate a random number with the help of demonstrations. We can utilize Math.random() and Math.floor() methods to do so.