bootswatch/docs/_assets/js/custom.js

(function () {
  'use strict';

  $(window).scroll(function () {
    var top = $(document).scrollTop();
    if (top > 50) {
      $('#home > .navbar').removeClass('navbar-transparent');
    } else {
      $('#home > .navbar').addClass('navbar-transparent');
    }
  })

  $('a[href="#"]').click(function (event) {
    event.preventDefault();
  })

  $('.bs-component').each(function () {
    var $component = $(this);
    var $button = $('<button class="source-button btn btn-primary btn-xs" role="button" tabindex="0">&lt; &gt;</button>');
    $component.append($button);

    if ($component.find('[data-bs-toggle="tooltip"]').length > 0) {
      $component.attr('data-html', $component.html());
    }
  });

  var popoverTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="popover"]'))
  var popoverList = popoverTriggerList.map(function (popoverTriggerEl) {
    return new bootstrap.Popover(popoverTriggerEl)
  })

  var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'))
  var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
    return new bootstrap.Tooltip(tooltipTriggerEl)
  })

  var sourceModalElem = document.getElementById('source-modal');
  if (sourceModalElem) {
    var sourceModal = new bootstrap.Modal(document.getElementById('source-modal'));
  }

  $('body').on('click', '.source-button', function (event) {
    event.preventDefault();

    var component = $(this).parent();
    var html = component.attr('data-html') ? component.attr('data-html') : component.html();

    html = cleanSource(html);
    html = Prism.highlight(html, Prism.languages.html, 'html');
    $('#source-modal code').html(html);
    sourceModal.show();
  })

  function cleanSource(html) {
    html = html.replace(/×/g, '&times;')
               .replace(/«/g, '&laquo;')
               .replace(/»/g, '&raquo;')
               .replace(/←/g, '&larr;')
               .replace(/→/g, '&rarr;')

    var lines = html.split(/\n/);

    lines.shift();
    lines.splice(-1, 1);

    var indentSize = lines[0].length - lines[0].trim().length;
    var re = new RegExp(' {' + indentSize + '}');

    lines = lines.map(function (line) {
      if (line.match(re)) {
        line = line.slice(Math.max(0, indentSize));
      }

      return line;
    });

    lines = lines.join('\n');

    return lines;
  }
})();