千锋教育JavaScript全套视频教程（10天学会Js，前端javascrip

const arr = [1, 2, 3, 1, 2, 3, 4, 4, 5, "a", "a", "b", "c", "b"];

// 去重方案1：Set

const result1 = [...new Set(arr)]; 

const result2 = Array.from(new Set(arr));