Changing input values on keyup by class name-CodePudding

I'm attempting to adapt an existing Jquery script which corrects the case on input values as they are being typed - previously it has run by me manually adding an onkeyup event to the input to call the script but I'd like it run based on classname instead.

I attempted to adapt the guidance given at keyup events using class instead of id so that my script will run when the element has a class of "correctcase" but so far haven't had success in getting the script to update the value but I'm not clear on what I'm missing.

Currently I have:

(function($) {

    $('.correctcase').keyup(function(event){
       
        return $(this).val().replace(
            /\w\S*/g,
            function(txt) {
                return txt.charAt(0).toUpperCase()   txt.substr(1).toLowerCase();
            }
        );

    });

})( jQuery );

The previous onkeyup attribute added to the element was:

onkeyup="this.value=toTitleCase(this.value)"

So I'm sure I'm just missing something in terms of passing the value properly?

CodePudding user response：

Inside your event handler you were returning the transformed value instead you needed to use it to set the value of the input element.

$('.correctcase').keyup(function(event){       
  const currentValue = $(this).val();
  const transformed =
        currentValue.replace(/\w\S*/g,
          function(txt) {                
            return txt.charAt(0).toUpperCase()   txt.substr(1).toLowerCase();
          }
        );
  $(this).val(transformed);
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input type="text"  value="">