Custom client side validation not showing up..?

Question

Hey guys,

So I went to this article >
http://www.chronoengine.com/faqs/54-cfv4/cfv4-validation/2656-how-can-i-add-a-custom-client-side-validation.html
Did everything as asked.
But the validation doesn't seem to be working..
The javascript it's loading (first in the onload)

function customCheck(el){
  if ( !el.val().match(/^\+316\d{8}$/) ) {
    return false;
  } else {
    return true;
  }
}

(the regex formula is for a dutch mobile number).

It doesn't trow me an error when I'm filling something else than that number in.. Which of course it should. Am I doing something wrong?
This is the page! Hope you can help me
https://www.independent-duinrand.nl/index.php?option=com_chronoforms5&chronoform=Machtigingsformulier

GreyHead · Accepted Answer

Hi timzuidgeest,

It looks as if the function isn't being called. You have this class in the input validate['required','%customCheck'] which is the old CFv4 code. In CFv5 it looks as if it is validate['required', 'custom:customCheck']

Or, better, you can scroll down the validation tab and add the function name to the Custom function box at the bottom.

Bob