How do I change text to uppercase now?

Hi,
I need to receive all the fields UPPERCASE, regardless of field type/name.

As the additional setting “on_submit: ” is deprecated I’m trying to use DOM events to accomplish this.

I have been trying adding this js:
document.addEventListener( ‘wpcf7submit’, function( event ) {
$(‘input[type=text]’).val(function(){return this.value.toUpperCase();})
}
But unfortunately JS/PHP are not my specialty. And I have found no evidence of anyone tackling the uppercase problem yet.

Could somebody help me?

Thank you so much