HTML5 required pattern - cant figure it out

[Da9L]

Hey people.. Im creating a form where one of the text input fields needs to hold an address.. For this i need to make sure that the user types at least letters and numbers.. That is all.. I just cant seem to find out how do to this with JavaScript Regular Expression ..

What i have is this

<input type="text" size="47" required="true"  name="adresse" required pattern="[A-Za-z ]+\d+[A-Za-z \,\.]+\d+[A-Za-z \,\.]+"/>

The above is not good enough .. It "works" but only for one type of address like this:

Sunset road 4C, 1.tv.

Yes thats how an address could look here in Denmark

But i also need it to be able to accept an address like this:

Sunset road 4
or
Sunset road 4-C 1-tv.
or
Sunset road 4 C 1.t-v.

And the list goes on .. The easiest way for this i believe is to just make the regular expression check if there is numbers and letters in the field and thats it .. How do i go about that ?

[tr333]

I'm guessing that validating an address could get quite tricky, so why not just have it as a required field so they are forced to enter "any" value to submit the form?

You're using the required attribute incorrectly. The HTML5 Spec says that "true" and "false" are not valid values in attributes. You would want to use:

<input type="text" name="address" required />

or alternatively

<input type="text" name="address" required="required" />

I also noticed you are doing length validation on the input field (size="47"). What if someone has an address longer than 47 characters? It might be extremely unlikely, but still possible? If you are going to do client-side (browser) input validation, don't forget to also do it on the server-side as you should never explicitly trust that what the client is sending to the server is valid data

[Da9L]

I'm guessing that validating an address could get quite tricky, so why not just have it as a required field so they are forced to enter "any" value to submit the form?

You're using the required attribute incorrectly. The HTML5 Spec says that "true" and "false" are not valid values in attributes. You would want to use:

<input type="text" name="address" required />

or alternatively

<input type="text" name="address" required="required" />

I also noticed you are doing length validation on the input field (size="47"). What if someone has an address longer than 47 characters? It might be extremely unlikely, but still possible? If you are going to do client-side (browser) input validation, don't forget to also do it on the server-side as you should never explicitly trust that what the client is sending to the server is valid data

It might end up with just requiring "anything" to be written in the field instead. As for the me using it wrongly thanks for pointing it out eventhough it works the way i have done it ..

Oh and the size="47" is not length validation its simply the size of the textbox