笨小孩

摘要： let arr = [1, 1, 2, 2, 3, 4, 5]; let res = new Set(arr); console.log(res); //{1, 2, 3, 4, 5} let arr1 = [...res]; console.log(arr1); //[1, 2, 3, 4, 5] 阅读全文