Скачать или смотреть Creating a Global Random Number Variable: How to Keep Your Code Clean and Handy

Discover how to generate a `random number` each time with a single global reference, keeping your code clean and efficient!
---
This video is based on the question https://stackoverflow.com/q/72200099/ asked by the user 'pseudojk' ( https://stackoverflow.com/u/5525749/ ) and on the answer https://stackoverflow.com/a/72200725/ provided by the user 'CherryDT' ( https://stackoverflow.com/u/1871033/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: A single global variable that is always a random number each time it's referenced

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Generating a Global Random Number in JavaScript

If you’re diving into the world of JavaScript and looking to add some randomness to your web development projects, you may find yourself in a situation where you want a global variable that always yields a new random number each time it’s referenced. You might have faced the following dilemma: while generating a random number is easy, ensuring that the number changes each time you use it can complicate your code. Let’s explore how to efficiently achieve this.

The Challenge

For example, you may be working on a project involving generative art, where you need a fresh random number repeatedly to define various properties of your designs consistently. You might initially have tried a simple implementation:

[[See Video to Reveal this Text or Code Snippet]]

In this code, randomNumber gets defined just once—so every reference to it will produce the same static value. This can be frustrating when you intend for each use to yield a new number!

The Solution

The best way to tackle this issue is to avoid using a variable altogether in favor of a function. This way, every time you call the function, it generates a new random number on the fly. Here’s how you can achieve this cleanly:

Using a Function

Instead of relying on a global variable, you can create a simple function that returns a random number each time it is invoked:

[[See Video to Reveal this Text or Code Snippet]]

Why Use a Function?

Clean Code: A function keeps your codebase organized and avoids duplication of logic. You call it repeatedly without re-writing the random number generation code.

Understandable Behavior: Using a function is clearer to anyone reading your code. It avoids the unexpected behavior that can arise with properties on the global object.

Flexibility: Should you want to alter the range of random numbers in the future, you can change it in one place within the function itself.

Conclusion

In summary, instead of trying to create a global variable that yields a new random number each time, leveraging a function is a smarter and more efficient approach. By implementing simple functions, you keep your codebase tidy, make your intentions clearer, and generate random numbers as needed for your projects. Additionally, having this strategy in your toolkit will be invaluable as you continue to explore concepts such as generative art and interactive designs.

Keep experimenting, and happy coding!