JAVASCRIPT

js modulo

// The JS % operater is REMAINDER not MODULO
// For modulo behaviour use
function mod(n, m) {
  return ((n % m) + m) % m;
}

js modulo

// find even(/odd)
n%2===0
// find integer
//eg x/v isInteger
x%y === 0

modulos nodejs

const os = require('os');