Question

我在我的网站上使用下面的插件作为粘性标题，我想在div $('.logo').addClass('whatever-class');中添加另一个类当激活is-sticky类时，它不会删除该类。< / p>

最好的方法是添加辅助ClassName吗？

代码：

(function($) {
  var defaults = {
      topSpacing: 0,
      bottomSpacing: 0,
      className: 'is-sticky',
      wrapperClassName: 'sticky-wrapper',
      center: false,
      getWidthFrom: ''
    },
    $window = $(window),
    $document = $(document),
    sticked = [],
    windowHeight = $window.height(),
    scroller = function() {
        var scrollTop = $window.scrollTop(),
        documentHeight = $document.height(),
        dwh = documentHeight - windowHeight,
        extra = (scrollTop > dwh) ? dwh - scrollTop : 0;

        for (var i = 0; i < sticked.length; i++) {
            var s = sticked[i],
            //elementTop = s.stickyWrapper.offset().top,
            elementTop = jQuery('#sticket-scroll-header-point').offset().top,
            //etse = elementTop - s.topSpacing - extra;
            etse = elementTop + 250;

            if (scrollTop <= etse) {
                if (s.currentTop !== null) {
                    s.stickyElement
                        .css('position', '')
                        .css('top', '');
                    s.stickyElement.parent().removeClass(s.className);
                    s.currentTop = null;
                    s.stickyElement.removeClass('fadeInDown');
                    //$('#header.header_v2').css({'position': 'absolute', 'top': 0});
                    //$('#header.header_v1').css({'position': 'relative'});
                }
            }
            else {
              var newTop = documentHeight - s.stickyElement.outerHeight()
                - s.topSpacing - s.bottomSpacing - scrollTop - extra;
              if (newTop < 0) {
                newTop = newTop + s.topSpacing;
              } else {
                newTop = s.topSpacing;
              }

              if (s.currentTop != newTop) {
                s.stickyElement.parent().css('height', s.stickyElement.outerHeight());
                s.stickyElement
                  .css('position', 'fixed')
                  .css('top', newTop)
                  .css('max-width', s.stickyElement.parent().width());
                //$('#header.header_v2').css('position', 'fixed');
                if (typeof s.getWidthFrom !== 'undefined') {
                  s.stickyElement.css('width', $(s.getWidthFrom).width());
                }
                s.stickyElement.addClass('fadeInDown');
                s.stickyElement.parent().addClass(s.className);
                s.currentTop = newTop;
                //$('#header.header_v1, #header.header_v2').css({'position': 'fixed', 'top': -50});
              }
            }
      }
    },
    resizer = function() {
      windowHeight = $window.height();
    },
    methods = {
      init: function(options) {
        var o = $.extend(defaults, options);
        return this.each(function() {
          var stickyElement = $(this);

          var stickyId = stickyElement.attr('id');
          var wrapper = $('<div></div>')
            .attr('id', stickyId + '-sticky-wrapper')
            .addClass(o.wrapperClassName);
          stickyElement.wrapAll(wrapper);

          if (o.center) {
            stickyElement.parent().css({width:stickyElement.outerWidth(),marginLeft:"auto",marginRight:"auto"});
          }

          if (stickyElement.css("float") == "right") {
            stickyElement.css({"float":"none"}).parent().css({"float":"right"});
          }

          var stickyWrapper = stickyElement.parent();
          //stickyWrapper.css('height', stickyElement.outerHeight()); //thandhoi
          sticked.push({
            topSpacing: o.topSpacing,
            bottomSpacing: o.bottomSpacing,
            stickyElement: stickyElement,
            currentTop: null,
            stickyWrapper: stickyWrapper,
            className: o.className,
            getWidthFrom: o.getWidthFrom
          });
        });
      },
      update: scroller
    };

  // should be more efficient than using $window.scroll(scroller) and $window.resize(resizer):
  if (window.addEventListener) {
    window.addEventListener('scroll', scroller, false);
    window.addEventListener('resize', resizer, false);
  } else if (window.attachEvent) {
    window.attachEvent('onscroll', scroller);
    window.attachEvent('onresize', resizer);
  }

  $.fn.sticky = function(method) {
    if (methods[method]) {
      return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
    } else if (typeof method === 'object' || !method ) {
      return methods.init.apply( this, arguments );
    } else {
      $.error('Method ' + method + ' does not exist on jQuery.sticky');
    }
  };
  $(function() {
    setTimeout(scroller, 0);
  });
})(jQuery);

Answer 1

添加的类取自您在配置时传递给扩展名的选项。

在选项中，您可以指定wrapperClassName。如果不这样做，则默认为'sticky-wrapper'。

在该属性中，您甚至可以指定多个类，以空格分隔。扩展使用$.addClass来添加类，并且该方法接受一个或多个空格分隔的类，因此将{wrapperClassName: 'sticky-wrapper yourownclass'}作为选项传递完全正常。

jQuery修改Sticky插件以添加另一个类

1 个答案: