如何用break控制循环让console.log(sum)的值是不一样的呢

Question

var a = [1, 2, 3, 4, 5, 6, 7, 8];

sum = [];

array = parseInt(10 * Math.random());

for (var j = 0; j < 3; j++) {

    for (var i = 0; i < a.length; i++) {

       

        sum[i] = a[i];

        if (i == array) {

            break

        };

    }

    console.log(sum);

}

 

Answer 1

break 是可以去掉的…let arr = [1, 2, 3, 4, 5, 6, 7, 8]let result = []for (let i = 0; i < arr.length - 1; i++) {&nbsp; // 每次循环重置 result&nbsp; result = []&nbsp; for (let j = 0; j < arr.length; j++) {&nbsp; &nbsp; result.push(arr[j])&nbsp; &nbsp; if (j >= i) break&nbsp; }&nbsp; console.log(result)}