prevent dom based - xss from js file in mvc

Question

I'm using a free template as a front end in my application and the main javascript file came out as a high risk as it's vulnerable to a dom based cross site scripting.Is there a way to sanitize the javascript function inside a javascript file? I searched and i found a .net library "System.Web.Security.AntiXss" that works on the server side but what should i use in this js file? the js file:

// Activate smooth scroll on page load with hash links in the url
  $(document).ready(function() {
    if (window.location.hash) {
      var initial_nav = window.location.hash;
      if ($(initial_nav).length) {
        var scrollto = $(initial_nav).offset().top - scrolltoOffset;
        $('html, body').animate({
          scrollTop: scrollto
        }, 1500, 'easeInOutExpo');
      }
    }
  });
// Toggle .header-scrolled class to #header when page is scrolled
  $(window).scroll(function() {
    if ($(this).scrollTop() > 100) {
      $('#header').addClass('header-scrolled');
    } else {
      $('#header').removeClass('header-scrolled');
    }
  });

  if ($(window).scrollTop() > 100) {
    $('#header').addClass('header-scrolled');
  }

  // Back to top button
  $(window).scroll(function() {
    if ($(this).scrollTop() > 100) {
      $('.back-to-top').fadeIn('slow');
    } else {
      $('.back-to-top').fadeOut('slow');
    }
  });

  $('.back-to-top').click(function() {
    $('html, body').animate({
      scrollTop: 0
    }, 1500, 'easeInOutExpo');
    return false;
  });

  // jQuery counterUp
  $('[data-toggle="counter-up"]').counterUp({
    delay: 10,
    time: 1000
  });
 // Init AOS
  function aos_init() {
    AOS.init({
      duration: 1000,
      easing: "ease-in-out",
      once: true,
      mirror: false
    });
  }
  $(window).on('load', function() {
    aos_init();
  });

})(jQuery);

Thank you in advance.