Hash string into number
JavaScript, Math · Oct 22, 2020
Hashes the input string into a whole number.
- Use
String.prototype.split()andArray.prototype.reduce()to create a hash of the input string, utilizing bit shifting.
const sdbm = str => {
let arr = str.split('');
return arr.reduce(
(hashCode, currentVal) =>
(hashCode =
currentVal.charCodeAt(0) +
(hashCode << 6) +
(hashCode << 16) -
hashCode),
0
);
};sdbm('name'); // -3521204949
