HTML boolean attributes

Hi,
How can I set the boolean attribute “required” for use with html//1?

<input class='form-control'
           id='code'
           type='number'
           required>

Syntactically it’s a as simple as it could be, I think. Just

...
div(['with a check', input([type=checkbox,checked])]),
...

produces a checked check box.

Semantically, it’s another story. Reacting to ‘required’ means different actions in different parts of code. Are you going to handle it client side or server side ? What your ‘theme’ says ? Mostly depends on this.

Hi Carlo,
Thanks for your reply.