**Random number generation** is crucial to many **applications**, especially those in the gaming and gambling industries. In these applications, it is essential to **generate random numbers** that are unpredictable and unbiased. This is why **random number generators** find their use to shuffle cards in a deck, roll dice in a game, or choose a lucky winner in a contest. This article explains how to make a **random number generator in JavaScript**.

JavaScript is one of the leading technologies of the World Wide Web, with **HTML** and **CSS** as **ActionListener**. It provides built-in functions for random number generation, making creating a random number generator easy.

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**Generating Random Numbers In JavaScript**

The **Math.random() function** is the **built-in function** in JavaScript for generating random numbers. Math.random() function returns a random number in 0 (inclusive) to 1 (exclusive). To generate a random number within a specific range, we can multiply the result of **Math.random()** by the range and then use the **floor() function** to round down to the nearest integer.

Here is an example of how to generate a random number between 1 and 10 in javascript:

In the example above, we multiplied **Math.random()** by 10 to get a number between 0 and 10, and we added 1 to get a number between 1 and 10. Finally, we used the **floor() function** that always rounds down and returns the largest integer less than or equal to a given number.

**Creating A Random Number Generator Function**

To make our random number generator more reusable, we can create a function that accepts a range and returns a random number within that range. Here is an example of a random number generator function:

In the example above, the **getRandomNumber() function** accepts two parameters, **min** and **max**, representing the range’s minimum and maximum values. The function calculates a random number within the field by subtracting the minimum from the maximum to get the size of the range, then multiplying **Math.random**() by the size of the range, and finally adding the minimum to the result.

**See Also: How To Convert Array To A Map In JavaScript**

**Using The Random Number Generator Function**

To use the **random number generator function**, we call it and pass in the minimum and maximum values of the range. Here is an example:

In the example above, we called the **getRandomNumber() **function by passing the minimum and maximum values as 1 and 10. The function then returns a random number between 1 and 10, which we logged into the console.

**Conclusion**

Random number generators are a helpful tool in many applications, and JavaScript provides a built-in function for generating random numbers. Creating a random number generator function can make our code more reusable and maintainable. With a few lines of code, you can easily create a random number generator in JavaScript. You can also use it in various applications.

**See Also: How To Use JavaScript In Angular**