How to create a cross-browser smooth scrolling with jQuery?

We saw how to create a smooth scrolling using CSS in this post: How To Create A Smooth Scrolling Effect With CSS?

But scroll-behavior property is not supported by all browsers so we can use JavaScript or jQuery to achieve cross-browser smooth scrolling solution.

Solution using ID

$(document).ready(function () {
  $("#elementID").on("click", function (event) {
    event.preventDefault();
    var element = $(this);
    $("html, body").animate(
      {
        scrollTop: element.offset().top,
      },
      800
    );
  });
});

Solution using a tag

$(document).ready(function () {
  $("a").on("click", function (event) {
    if (this.hash !== "") {
      event.preventDefault();

      var hash = this.hash;

      $("html, body").animate(
        {
          scrollTop: $(hash).offset().top,
        },
        800,
        function () {
          window.location.hash = hash;
        }
      );
    }
  });
});

Source: w3schools

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