1var index = array.indexOf(item);
2if (index !== -1) array.splice(index, 1);

1const items = ['a', 'b', 'c', 'd', 'e', 'f']
2const i = 2
3const filteredItems = items.slice(0, i).concat(items.slice(i + 1, items.length))
4// ["a", "b", "d", "e", "f"]
5

1var data = [1, 2, 3];
2
3// remove a specific value
4// splice(starting index, how many values to remove);
5data.splice(1, 1);
6// data = [1, 3];
7
8// remove last element
9data.pop();
10// data = [1, 2];