Mancunian
Member
I am looking for some help on fixing my "Username match Regular Expression".
I am currently using this:
^[a-zA-Z0-9]+$
This does not permit a space within the username.
However, I want to allow a single space within the username but not allow multiple spaces.
So
John Doe - should be valid - as should John F Doe - i.e. a space between each word.
but
John.......Doe is invalid as it has multiple intervening spaces - shown here as dots as I cannot enter white space.
Can anybody help a I am suffering from a brain freeze with regex.
I am currently using this:
^[a-zA-Z0-9]+$
This does not permit a space within the username.
However, I want to allow a single space within the username but not allow multiple spaces.
So
John Doe - should be valid - as should John F Doe - i.e. a space between each word.
but
John.......Doe is invalid as it has multiple intervening spaces - shown here as dots as I cannot enter white space.
Can anybody help a I am suffering from a brain freeze with regex.