| 123456789101112131415 | function money(s, n) {  n = n || 0;  n = n >= 0 && n <= 5 ? n : 2;  s = parseFloat((s + '').replace(/[^\d\.-]/g, '')).toFixed(n) + '';  s = s.split('.');  let l = s[0].split('').reverse(),    r = s[1] || '',    t = '';  for (let i = 0; i < l.length; i++) {    t += l[i] + ((i + 1) % 3 == 0 && (i + 1) != l.length ? ',' : '');  }  return t.split('').reverse().join('') + (r ? ('.' + r) : r);}module.exports = money;
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