make customer comment field required at checkout in VM 2.6.22

[6.522]

Hi, I know this is covered in VM 3x now but I need a solution to make a customer comment field required at checkout in VM 2.6.22, please - without updating to VM 3x
Regards

my joomla ver 2.5.28

[GJC Web Design]

jquery snippet to disable the chk out button until comment is filled
or hack the vm validation script to incl comment

or does the textarea just need a required class etc?

[6.522]

Hey, thanks for the tips! Yes I just need something that will not allow user to complete the check out if the comment field is empty - the simplest solution that will do the job.
Regards

[6.522]

Ok, so I ended up adding the "required" attribute to the textarea - as you suggested - and it works. The downside is IE9 (and lower) does not support this - is there a way to do sth about it?
Regards

[jenkinhill]

Detect that old browser and send them to an update site? Or link to https://www.microsoft.com/en-gb/WindowsForBusiness/End-of-IE-support

Alternatively you may have to hack the validation script.

[6.522]

Thanks! I think I will leave it as it is for now, but if I would decide to change the validation script where should I start with?
Regards