本文介绍了如何匹配正则表达式中两个单词之一?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想在正则表达式中匹配@或'at'.有人可以帮忙吗?我尝试使用?运算符,给我/@?(at)?/,但这没用
I want to match either @ or 'at' in a regex. Can someone help? I tried using the ? operator, giving me /@?(at)?/ but that didn't work
推荐答案尝试:
/(@|at)/这表示@或at,但不是两者.它也被捕获在一个组中,因此以后您可以根据需要通过反向引用访问完全匹配项.
This means either @ or at but not both. It's also captured in a group, so you can later access the exact match through a backreference if you want to.
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如何匹配正则表达式中两个单词之一?
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