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perenstrom/random-from-seed.js Secret

Created June 21, 2019 14:16
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Medium: AB-testing 2
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random-from-seed.js
export const randomFromSeed = (seed) => {
if (!seed) {
return -1;
}
let newSeed = 0;
for (let i = 0; i < seed.length; i += 1) {
newSeed += seed.charCodeAt(i) * Math.pow(10, i);
}
const x = Math.sin(newSeed) * 10000;
return x - Math.floor(x);
};
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