如何在正则表达式中添加空格？

Question

I have this code:

CODE JS:

const phone= /^\(?(\d{3})\)?[-]?(\d{3})[-]?(\d{4})$/;

After running this code has the following form

(123)132-1312

I want to add white space before the last parentheses as in the example below.

(123 )132-1312

Can you please tell me how to accept changes to the code so that white space?

Thanks in advance!

EDIT:

text = $(this).val().replace(/(\d{3})(\d{3})(\d{4})/, "($1)$2-$3");
var testt=$(this).val().match(text);

I added this code to call here as add white space ...

Answer 1

这应该可以根据需要工作：

/^\(?\s*(\d{3})\s*\)?[-]?(\d{3})[-]?(\d{4})$/

Answer 2

Depending on wether you always want the whitespace befor the closeing parenthesis or not your could go with:

^\\(?(\\d{3}\\s?)\\)?[-]?(\\d{3})[-]?(\\d{4})$

Background \\s is for whitespaces. the ? stands for 0 or 1 occurrance of the previous sign. if you use + it is one or more and * is for 0 or more occurrences of the previous sign.

To test your regex you can always use regexpal