How to generate random numbers 0 to 26 using crypto.generateValues()

Question

How to generate random numbers 0 to 26 using crypto.getRandomValues(). help

var array = new Uint32Array(1);
window.crypto.getRandomValues(array);

console.log(Math.floor(array[0] * 5));

if you want a number between 0 and 26 you probably want to use `Math.random()`... — Alberto Sinigaglia, Apr 14 '21 at 13:22

score 0 · Accepted Answer · answered Apr 14 '21 at 13:26

As suggested, personally you can use Math.random() which is made for those things:

let number = Math.random() * 26

But math-wise, you can just get a number between 0 and N using the module class N+1, so like:

let number = yourFunctionThatUsesCrypto() % 27 // [0,26]
let number = yourFunctionThatUsesCrypto() % 26 // [0,26)

Otherwise, as suggested from @Mr. Polywhirl you can scale the number between 0,1 (normalize) and then multiply it by the limit you want (in this case, 26)

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