Returns every element that exists in any of the two arrays once.
Create a Set
with all values of a
and b
and convert to an array.
代码片段
const union = (a, b) => Array.from(new Set([...a, ...b]));
使用样例
union([1, 2, 3], [4, 3, 2]); // [1, 2, 3, 4]