How to allow Regex expression with Spaces

Question

var validate = /^[@#&%][a-zA-Z0-9]{4}$/;

我还需要在此正则表达式中允许使用空格。

Answer 1

It's exactly as easy as one might think: add a space to the regex where you want to match a space. Spaces work just like any other character in regex.

If you want to match any whitespace character (including tabs, etc.) you can use \\s to match any whitespace character.

Answer 2

if you want just regular space to be allowed then use a normal space in your brackets like this

/^[@#&%][a-zA-Z0-9 ]{4}$/

else if you wish to allow all white spaces such as tab or new line use \\s :

/^[@#&%][a-zA-Z0-9\s]{4}$/

Answer 3

You need to do this:

var validate = /^[@#&%][a-zA-Z0-9 ]{4}$/;

Note, just add a space within the brackets.