changing the language of error message in required field in html5 contact form

Question

I am trying to change the language of the error message in the html5 form field.

I have this code:

Answer 1

//Dynamic custome validation on all fields
//add validate-msg attr to all inputs
//add this js code

$("form :input").each(function(){
                    var input = $(this);
                    var msg   = input.attr('validate-msg');
                    input.on('change invalid input', function(){
                        input[0].setCustomValidity('');
                        if(!(input[0].validity.tooLong || input[0].validity.tooShort)){
                            if (! input[0].validity.valid) {
                                input[0].setCustomValidity(msg);
                            }
                        }


                    });
                });