正则表达式匹配数字和字符 [英] regular expression match digit and characters

问题描述

如何创建仅匹配字符和数字的正则表达式?

How can I create a regex expression that will match only characters and numbers?

此正则表达式匹配的宽度数字:/\ D/g

this regex matched width digit: /\D/g

如何在其中添加-， _ ， * 等字符?

how can add characters like - , _ , * and etc to it?

推荐答案

仅匹配字母和数字，

[A-Za-z0-9]

将想要的字符添加到上述字符类中，以匹配特定字符.

Add the characters you want into the above character class to match also that specific characters.

[A-Za-z0-9_*-]

您可以将上述正则表达式减少为

You could reduce the above regex to,

[\w*-]

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