merg two array js

1let ar1 = [1,2,3,4,5]
2let ar2 = [6,7,8,9,10]
3
4let merge = [...ar1,...ar2]
5console.log(merge) // [1,2,3,4,5,6,7,8,9,10]

1function mergeArrays(arr1, arr2) {
2  return Array.from(new Set(arr1.concat(arr2).sort((a,b) => (a-b))));
3}