本文介绍了正则表达式字母、数字、破折号和下划线的处理方法，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
我不确定如何实现此匹配表达式.目前我正在使用，
Im not sure how I can achieve this match expression. Currently I am using,
([A-Za-z0-9-]+)
...匹配字母和数字.我还想在同一个表达式中匹配破折号和下划线.有人知道怎么做吗?
...which matches letters and numbers. I would also like to match on dashes and underscores in the same expression. Anyone know how?
我希望能够匹配 product_name 和 product-name
I would like to be able to match product_name and product-name
推荐答案
只需对破折号进行转义以防止它们被解释(我认为下划线不需要转义，但它不会造成伤害).你没有说你使用的是哪个正则表达式.
Just escape the dashes to prevent them from being interpreted (I don't think underscore needs escaping, but it can't hurt). You don't say which regex you are using.
([A-Za-z0-9\-\_]+)
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