//例如[1,2,3,4,5,6,7,8]变为[[1,2,3,4],[5,6,7,8]] var arr=[1,2,3,4,5,6,7,8]; function fixedArray(arr) { var bigArray = []; var smArray = []; for (var i = 0; i < arr.length; i++) { smArray.push(arr[i]); //四个一组放到新数组 if ((i + 1) % 4 == 0 || i == arr.length -