复制
1 | const arr = [1, 2, { name: "ipenman" }]; |
去重
1 | const arr = [1, 2, { name: "ipenman" }]; |
合并(不去重)
1 | const arr1 = [1, 2]; |
合并(去重)
1 | const arr = [1, 2, 3, 4, 5]; |
交集
1 | const arr = [1, 2, 3, 54, 5, 6, 7, 21, 4, 2, 2]; |
去空值
1 | const arr = [1, 0, null, undefined, false, NaN, "fdsf", "", ""]; |
多维数组平铺一维数组
1 | function fn(arr, num) { |