multiple asc/desc sort

example1.js

function comp(a, b, n) {
  let p1,p2,ret;

  ret = 0;
  ret += a < b;
  ret -= a > b;
  ret = convert(ret ? ret : 0, n);
  return ret
  
  p1 = ((a<b)/2);
  p2 = convert(p1, n);
  //console.log(a,b,n, 'c1', ((a<b)/2),'p1', p1, 'p2', p2);
  return p2;
}

function convert(n, d) {
  return n-((d*2)*n)
};

function compcomp(a, b, sort) {
  return _.reduce(sort, function(acc, n) {
    let a1, b1;

    a1 = _.get(a, n.n)
    b1 = _.get(b, n.n)
    let r = comp(a1,b1,n.d);
    return (acc*2) + r;
  }, 0);
}


t = [
  {n: 'joe', c: 1, t: 100},
  {n: 'susan', c: 54, t: 10},
  {n: 'alfred', c: 34, t: 7},
  {n: 'joe', c: 34, t: 4},
  {n: 'jack', c: 31, t: 2},
  {n: 'flo', c: 100, t: 4},
  {n: 'moe', c: 2, t: 1},
]

sorts = [
  {n: 't', d: true},
  {n: 'c', d: true},
]

t.sort(function(a,b) {
  let t = compcomp(a,b,sorts);
  console.log(t);
  return t;
})