div位置固定重新大小的行为

I have fixed menu on my site which works without any issue. I have a container(not bootstrap) which will be fixed when makes contact with the static menu. Everything is work as expected except when I re-size the window the container goes to sort of absolute position with 0 top. The style or anything does not mention this explicitly, as it still has position:fixed but what I see is this. I tried most of the questions related to this problem in * and other resources but nothing gave me a satisfying answer. Any help? Thanks.

我的网站上有固定菜单,没有任何问题。我有一个容器(不是引导程序),当与静态菜单联系时,它将被修复。一切都按预期工作,除非我重新调整窗口大小,容器进入0顶部的绝对位置。风格或任何事情都没有明确提及,因为它仍然有位置:固定,但我看到的是这个。我在*和其他资源中尝试了与此问题相关的大部分问题,但没有给我一个满意的答案。有帮助吗?谢谢。

$.fn.extend({
   scrollTabs: function() {
     var pageTop = parseFloat($(window).scrollTop());
     if (elementTop < pageTop + 66) {
       $(this).css({
         'position': 'fixed',
         'top': '66px',
         'left': '0',
         'right': '0',
         'z-index': '9999',
         'background': '#ffffff',
         'width': '100%',
         'padding': '20px 0',
         'margin-top': '0'
       });

       $(this).find('#product-tabs').css({
         'max-width': '1300px',
         'margin-left': 'auto',
         'margin-right': 'auto'
       });

     } else {
       $(this).css({
         'position': 'initial',
         'margin-top': '-' + elementHeight + 'px'
       });
     }
   }
 });

 $(window).load(function() {
   var scrollElement = $('.box-additional.box-tabs.grid12-12');
   elementTop = parseFloat($(scrollElement).offset().top);

   var overflowHeight = parseFloat($(window).height()) - 200;

   $('.box-additional.box-tabs.grid12-12').attr('id', 'firstElement');
   var scrollElement = $('#firstElement');
   elementHeight = parseFloat($(scrollElement).outerHeight());
   var newEle = $(scrollElement).after($(scrollElement).clone().attr('id', 'newElement'));
   var newElement = $('#newElement');
   $(scrollElement).css('visibility', 'hidden');
   $(newElement).css('margin-top', '-' + elementHeight + 'px');
   $(scrollElement).after(newElement);
   $(window).scroll(function() {
     $(newElement).scrollTabs();
   });
 });

 $(window).resize(function() {
   var scrollElement = $('#firstElement');
   elementTop = parseFloat($(scrollElement).offset().top);
   elementHeight = parseFloat($(scrollElement).outerHeight());
   var newElement = $('#newElement');
   $(newElement).css('margin-top', '-' + elementHeight + 'px');
   $(window).scroll(function() {
     $(newElement).scrollTabs();
   });
 });

.header-container {
  background-color: #000;
  position: fixed;
  width: 100%;
  z-index: 99999;
  color: #fff;
}
.grid12-12 {
  display: inline;
  float: left;
  margin-left: 1%;
  margin-right: 1%;
  font-size: 50px;
}
.page-content {
  min-height: 1000px;
  float: left;
  font-size: 72px;
  background:red;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>

<div class="header-container" id="top">
  this is my menu
</div>

<div class="page-content">
  this is my page content
<div>

<div class="box-additional box-tabs grid12-12">
  this is my container
</div>

1 个解决方案

#1

jQuery(newElement).css('margin-top', '-' + elementHeight + 'px');

jQuery(newElement).css('margin-top',' - '+ elementHeight +'px');

to

jQuery(newElement).css('top', '-' + elementHeight + 'px');

jQuery(newElement).css('top',' - '+ elementHeight +'px');