求一个正则表达式（只能包含小写英文字母、数字和下划线（必须以小写字母开头）），谢谢

› 正则表达式可视化调试 regex101.com

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3 replies • 2021-06-22 18:00:15 +08:00

bxb100

Jun 22, 2021

`^[a-z][a-z\d_]*$`

fydss

Jun 22, 2021

[a-z][a-z,0-9,_]+ 是这个意思吗

flyslow

Jun 22, 2021

@bxb100 #1 正解