如何知道我输入的卡片类型
问题描述：
嗨小伙伴们
hi guys
how to do ,a user entered card number you should able to detect which type of card it is. is it master card , visa card or american express card
我的尝试：
i尝试但是走向错误的方向请帮忙！
What I have tried:
i try but going in wrong direction please help!
答
一个非常简单的Google会让你这样： [ ^ ] - 这是微不足道的Google中的第一个链接。
将来请尽量自己做至少基础研究，不要浪费你的时间或我们的时间。
A very simple Google would have got you this: How to correctly detect credit card type[^] - it was the first link in a trivial Google.
In future, please try to do at least basic research yourself, and not waste your time or ours.