问题
I'm using the following Regex ^[a-zA-Z0-9]\s{2,20}$ for input
- Letters A - Z
- Letters a - z
- Numbers 0 - 9
The input length must be a least 2 characters and maximum 20 characters.
I also want to enable space in the input, but only space, not new line, etc.
Last thing I have problem with is that I want to enable characters such as !@#$%^&*)(
回答1:
add characters to your regex code like this~
^[a-zA-Z0-9 !@#$%^&*)(]{2,20}$
the \s is not only express space..
回答2:
Try ^[a-zA-Z0-9 ]{2,20}$.
And are you sure your original expression worked? The quantifier {2,20} is only applied to the \s, and not to your set inside [].
回答3:
Regarding the second part of your question, just put those characters inside of [], no escaping needed.
回答4:
All of Special Characters and char and number and with Space
[A-Za-z0-9-.& ,+!@#$%\^*();\/|<>"'?=:\t_\n[]{}~`]
回答5:
*** Regex for all types of special characters and normal characters too with space in between them.
Declare the below in some variable and perform your task:
/^[a-zA-Z0-9 !@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]{2,20}$/
*** Regex for all types of special characters with spaces:
/^[ !@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]{2,20}$/
(answer is tried and tested!!)
来源：https://stackoverflow.com/questions/6889963/regex-with-space-and-special-characters