javascript odd and even separation in an array of numbers

Question

i wants to separate an array with two groups (odd and even) sequentially. but when i try this:

Answer 1

I believe this can be covered by lodash _.partition:

var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
var [odds, evens] = _.partition(arr, function(n) {
  return n % 2;
});
console.log(_.concat(odds, evens));

Or even shorter:

_.groupBy(arr, function(n) {return (n % 2) ? 'odd' : 'even';})