how to pass this element to javascript onclick function and add a class to that clicked element

Answer 1

You can use addEventListener to pass this to a JavaScript function.

HTML

Year

JavaScript

(function () {
    var btn = document.getElementById('button');
    btn.addEventListener('click', function () {
        Date('#year');
    }, false);
})();

 function Data(string)
          {
                $('.filter').removeClass('active');
                $(this).parent().addClass('active') ;
          }