Random Number Generator in JavaScript

Introduction

In this lab, we will explore the concept of creating a random number generator in JavaScript. We will use the Math.random() method to generate a random value and map it to a desired range using multiplication. By the end of this lab, you will have a better understanding of how to generate random numbers in JavaScript and how to use them in your projects.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL javascript(("JavaScript")) -.-> javascript/BasicConceptsGroup(["Basic Concepts"]) javascript/BasicConceptsGroup -.-> javascript/variables("Variables") javascript/BasicConceptsGroup -.-> javascript/data_types("Data Types") javascript/BasicConceptsGroup -.-> javascript/arith_ops("Arithmetic Operators") javascript/BasicConceptsGroup -.-> javascript/comp_ops("Comparison Operators") subgraph Lab Skills javascript/variables -.-> lab-28574{{"Random Number in Range"}} javascript/data_types -.-> lab-28574{{"Random Number in Range"}} javascript/arith_ops -.-> lab-28574{{"Random Number in Range"}} javascript/comp_ops -.-> lab-28574{{"Random Number in Range"}} end

How to Generate a Random Number in a Given Range using JavaScript

To generate a random number in a specified range using JavaScript, follow these steps:

Open the Terminal/SSH and type node to start practicing coding.
Use the Math.random() method to generate a random value.
Map the generated value to the desired range using multiplication.
Use the following code to create a function that generates a random number in the given range:

const randomNumberInRange = (min, max) => Math.random() * (max - min) + min;

To use the function, pass in the minimum and maximum values of the desired range as arguments. For example:

randomNumberInRange(2, 10); // 6.0211363285087005

By following these steps, you can easily generate a random number in a given range using JavaScript.

Summary

Congratulations! You have completed the Random Number in Range lab. You can practice more labs in LabEx to improve your skills.