function reduceArray (arr,count) { var len,ar = Array(),k = 0; if (arr.length % count == 0) { len = parseInt(arr.length / count); } else{ len = parseInt(arr.length / count) + 1; } for (var i = 0;i < len;i++) { if (ar[i]) { ar[i] = ar[i]; }else{ ar[i] = []; } for (var a = 0;a < count;a++) { ar[i][a] = arr[k]; if (ar[i][a] == undefined) { ar[i].length = arr.length % count; } k++; } } var newAr = ar; console.log(newAr); }reduceArray([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21],5) //[[1,2,3,4,5],[6,7,8,9,10],[11,12,13,14,15,][16,17,18,19,20],[21]]
时间: 2024-10-12 14:01:12