Question

I have all kinds of resources that rely on javascript random numbers. However, I’ve been seeing a lot of problems where random isn’t so random because of the way I’m generating random numbers.

Is there any javascript resource for me to generate true, or just better random numbers?

I know that I can interface with Random.org, but what other options do I have?

I’m using:

function rand( lowest, highest){
    var adjustedHigh = (highest - lowest) + 1;       
    return Math.floor(Math.random()*adjustedHigh) + parseFloat(lowest);
}

Answer 1

Assuming you’re not just seeing patterns where there aren’t any, try a Mersenee Twister (Wikipedia article here). There are various implementations like this one on github.

Similar SO question:

Seedable JavaScript random number generator

If you want something closer to truly random, then consider using the random.org API to get truly random numbers, although I would suggest only using that to seed, not for every number, as you need to abide by their usage limits.