使用JavaScript正则表达式验证日期的问题 [英] Problems using javascript regex to validate date

问题描述

我正在尝试使用JavaScript正则表达式来验证日期输入，但是将有效日期返回为无效。我不是正则表达式的专家，所以我不知道有什么问题：

I'm trying to use javascript regex to validate a date input, but it is returning valid dates as invalid. I'm not an expert on regex so I don't know what is wrong with it:

/^([0-9]d{2})+(\.|-|\/)+([0-9]d{2})+(\.|-|\/)+([0-9]d{4})+$/

我希望接受这些日期格式：

I want these date formats to be accepted:

23/04/2001

23/04/2001

23-04-2001

23-04-2001

23.04.2001

23.04.2001

最初我是这样，但是它像其他角色接受日期，像23/04 / 2001jhsdgf：

Originally I had this, but it was accepting dates with other characters on the end like 23/04/2001jhsdgf:

/\d{2}(\.|-|\/)\d{2}(\.|-|\/)\d{4}/;

推荐答案

取您的原始正则表达式，只需添加 ^ 和 $ 从你的新的。问题解决了。

Take your original regex and just add the ^ and $ from your new one to it. Problem solved.

编辑：虽然，真的，（\。| - | \ /）一个混乱，应该是 [。\ / - ] 。

Although, really, the (\.|-|\/) is a mess and should be [.\/-] instead.

编辑2：第一个（[。\ / - ]）然后你可以用 \1 然后它需要两个分隔符相同。

EDIT 2: That said, if you make the first one ([.\/-]) then you can replace the second one with \1 and then it would require both separators to be the same.

这篇关于使用JavaScript正则表达式验证日期的问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！