@hilemangroup/bp-frontend/dist/js/plugins/jquery.scrollto.js

Common shared frontend utilities for boilerplate projects

"use strict";

+function ($) {
  var historySupported = !!window.history.pushState;
  var settings = {
    context: 'html, body',
    duration: 800,
    offset: 0
  };

  function getOffset($ctx, $elem, options) {
    return $elem.offset().top - options.offset;
  }

  function toHash(hash, options) {
    var $elem = $(hash);
    var $ctx;

    if (!$elem.length) {
      return;
    }

    options = $.extend({}, settings, options);
    $ctx = $(options.context);
    $ctx.animate({
      scrollTop: getOffset($ctx, $elem, options)
    }, options.duration, function () {
      if (historySupported) {
        window.history.replaceState(null, '', hash);
      }

      if (typeof options.callback === 'function') {
        options.callback();
      }
    });
  }

  function toElem(elem, options) {
    var $elem = $(elem);
    var $ctx;

    if (!$elem.length) {
      return;
    }

    options = $.extend({}, settings, options);
    $ctx = $(options.context);
    $ctx.animate({
      scrollTop: getOffset($ctx, $elem, options)
    }, options.duration, typeof options.callback === 'function' ? options.callback : null);
  }

  $.scrollto = {
    elem: toElem,
    hash: toHash
  };
}(jQuery);