The alert result is 13 and I'm not sure what the process was to getting it. I understand what the loop does and what += means, however am not sure on their connection or how the second loop effects the result. The alert result is 13 and I'm not sure what th
阅读背景：
通过警报结果了解嵌套for循环的过程
来源：互联网
分享到：
