数组移动
let arr = ['a','b','c','d'];
function move(arrs,from,to) {
let arr1 = [...arrs];
let item = arr1.splice(from,1);
arr1.splice(to,0,...item);
return arr1;
}
console.log(move(arr,3,0));
只要思想不滑坡,办法总比困难多!