'Regular expression to allow trailing and leading spaces

I now validate email addresses like so:

[-+.'\w]+@[-.\w]+\.[-.\w]+

Which means that if users accidentally have a trailing or leading space in that address (e.g. when copy/pasting), the expression validates to false.

So I want to allow trailing and leading spaces on the above expression. How can I do so?

Solution 1:^[1]

Use \s* at the end and start of your regex. \s* means white spaces having zero or more occurrence.

Consider the following Regex:

\s*[-+.'\w]+@[-.\w]+\.[-.\w]+\s*

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Solution	Source
Solution 1	Sabuj Hassan
Solution 2	halfer