一维数组转二维

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wangyanxin928/article/details/80000480

<script type="text/javascript">
    var oldAll = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 20, 1, 2, 3, 4, 5, 6, 7, 8, 9, 30, 1, 2, 3, 4, 5, 6, 7, 8, 9, 40, 1, 2, 3, 4, 5, 6, 7, 8, 9, 50, 1, 2, 3, 4, 5, 6, 7, 8, 9, 60, 1, 2, 3, 4, 5, 6, 7, 8, 9, 70, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11];
    var newArr = [];
    var item=[];
    for(var i=0;i<oldAll.length;i++){
        if(i%10==0){
            item=[];
        }
        item.push(oldAll[i]);
        if(i%10==2){
            newArr.push(item);
        }
    }
    console.log(newArr);

</script>

//输出结果