Javascript Random Number Between Range
Last Updated : Mar 11, 2024
IN - Javascript | Written & Updated By - Dikshita
In this article we will show you the solution of JavaScript random number between range, we will cover various techniques to accomplish this task, equipping you with a range of options to suit your specific needs.
By the end of this tutorial, you will have a solid understanding of the underlying concepts and practical implementations of generating random numbers within a given range using JavaScript.
We will begin by introducing a simple yet effective method that utilizes the Math.random() function along with basic arithmetic operations to generate random numbers.
We will then explore an alternative approach that involves creating a reusable function capable of producing random numbers within any desired range.
We will use the Math.random() function in JavaScript along with some basic arithmetic operations to generate random numbers within a specified range.
Additionally, we will explore how to create a reusable function that takes a minimum and maximum value as parameters and returns a random number within that range.
By using either of these methods, you can generate random numbers within a specified range in JavaScript.
The first method directly calculates the range and scales the random number, while the second method encapsulates the functionality into a reusable function.
Both approaches provide flexibility and allow you to generate random numbers tailored to your requirements.
Step By Step Guide On JavaScript Random Number Between Range :-
By Using Math.random() and Arithmetic Operations
function getRandomNumber(min, max) { var range = max - min + 1; var randomDecimal = Math.random(); var scaledNumber = randomDecimal * range; var randomNumber = Math.floor(scaledNumber); return randomNumber + min; } var randomNumber = getRandomNumber(1, 10); console.log(randomNumber); function getRandomNumberInRange(min, max) { var range = max - min + 1; var randomDecimal = Math.random(); var scaledNumber = randomDecimal * range; var randomNumber = Math.floor(scaledNumber); return randomNumber + min; } var randomNumber2 = getRandomNumberInRange(5, 15); console.log(randomNumber2);
- We define a function called getRandomNumber that takes two parameters: min and max.
- Inside the function, we use Math.random() to generate a random decimal number between 0 (inclusive) and 1 (exclusive).
- We multiply the random decimal number by the difference between max and min to scale it within the desired range.
- Since the result of the multiplication will be a decimal number, we use Math.floor() to round it down to the nearest integer.
- Finally, we add the min value to the result to shift the range from [0, max - min] to [min, max].
- The function returns the generated random number.
- In the example usage, we call the getRandomNumber function with min set to 1 and max set to 10.
- The generated random number within the range [1, 10] is stored in the randomNumber variable.
- We use console.log() to display the random number in the console.
Conclusion :-
In this tutorial, we learned how to generate random numbers within a specified range using JavaScript.
By utilizing the Math.random() function along with basic arithmetic operations, we were able to create a reusable function that produces random numbers within any desired range.
Feel free to use this method in your JavaScript projects whenever you need to generate random numbers within a specific range.
I hope this article on JavaScript random number between range helps you and the steps and method mentioned above ar easy to follow and implement.