Returns all the elements of an array except the last one.
Use arr.slice(0,-1) to return all but the last element of the array.
代码片段
const initial = arr => arr.slice(0, -1);使用样例
initial([1, 2, 3]); // [1,2]Returns all the elements of an array except the last one.
Use arr.slice(0,-1) to return all but the last element of the array.
const initial = arr => arr.slice(0, -1);initial([1, 2, 3]); // [1,2]