I have two lists as below. How to merge two lists with unique value (1), and how to exclude the second list items in the first list (2)
private List1: [];
private List2: [];
this.List1 = [1, 2, 3, 4, 5];
this.List2 = [2, 4, 6];
Results
1) result = [1, 2, 3, 4, 5, 6]
2) result = [1, 3, 5]
1) For unique set you can work with Set object and give to it an array. Set will remove duplicates automatically.
2) For excluded array you can use Array#filter and using a condition inside it take those items which are not in the list2.
const list1 = [1, 2, 3, 4, 5];
const list2 = [2, 4, 6];
const unique = [...new Set(list1.concat(list2))];
console.log(unique);
const excluded = list1.filter(item => !list2.includes(item));
console.log(excluded);