Returns all elements in an array except for the first one.
Return Array.prototype.slice(1) if the array’s length is more than 1, otherwise, return the whole array.
代码片段
const tail = arr => (arr.length > 1 ? arr.slice(1) : arr);使用样例
tail([1, 2, 3]); // [2,3]
tail([1]); // [1]