JSFiddle - React, Tailwind, and code Playground

HTML

<form action="">
<input type="checkbox" class="checkboxes" name="vehicle" value="Bike">I have a bike<br>
<input type="checkbox" name="vehicle" value="Car">I have a car 
</form>

JavaScript

function multiply(this_object){
          if(this_object.is(':checked'))
              return 2 * 2;
          else
              return "blah";
    }


    $(document).ready(function(){
        $('.checkboxes').click(function(){
           var this_object = $(this);
           alert(multiply(this_object));
                
    });
});