Optional
Rest
...arrays: any[]The arrays to inspect.
Optional
Rest
Returns the new array of combined values.
5.13.0
[[difference]], [[union]], [[unionBy]], [[without]], [[xor]], [[xorBy]]
const objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
const others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }]
unionWith(objects, others, isEqual)
// => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
This method is like
union
except that it acceptscomparator
which is invoked to compare elements ofarrays
. Result values are chosen from the first array in which the value occurs. The comparator is invoked with two arguments: (arrVal, othVal).