Javascript 为什么我的锚在第二次点击后表现不同?

Javascript 为什么我的锚在第二次点击后表现不同?,javascript,html,jquery,css,Javascript,Html,Jquery,Css,当我加载网站并点击Wirüber uns时,它不会像我再次点击按钮(向上滚动后)那样向下滚动。它应该向下滚动到节的开头,当它向下滚动到第二节时,第一节中的图片不应该可见(就像第二次单击它时一样) //标题为beim scrollen $(函数(){ var shrinkHeader=100; $(窗口)。滚动(函数(){ var scroll=getCurrentScroll(); 如果(滚动>=收缩页眉){ $('#navbar').addClass('shrink'); }否则{ $(“#

当我加载网站并点击Wirüber uns时,它不会像我再次点击按钮(向上滚动后)那样向下滚动。它应该向下滚动到节的开头,当它向下滚动到第二节时,第一节中的图片不应该可见(就像第二次单击它时一样)

//标题为beim scrollen
$(函数(){
var shrinkHeader=100;
$(窗口)。滚动(函数(){
var scroll=getCurrentScroll();
如果(滚动>=收缩页眉){
$('#navbar').addClass('shrink');
}否则{
$(“#navbar”).removeClass('shrink');
}
});
函数getCurrentScroll(){
return window.pageYOffset | | document.documentElement.scrollTop;
}
});
//JavaScript文档
$(文档).ready(函数(){
var navTop=$('#navbar').offset().top;
var navHeight=$('#navbar').height();
var windowH=$(window.height();
$('.section')。高度(窗H);
$(文档)。滚动(函数(){
var st=$(this.scrollTop();
//对于导航栏:
如果(st>navTop){
$('#navbar').addClass('fix');
$('.section:eq(0)').css({
“页边距顶部”:导航高度
});//修复由于修复导航栏导致的滚动问题
}否则{
$(“#navbar”).removeClass('fix');
$('.section:eq(0)').css({
“页边距顶部”:“0”
});
}
$('.section')。每个(函数(索引,元素){

如果(st+navHeight>$(this).offset().top&&st+navHeight首次加载页面时,在
#home

#home {
  height: 100% !important;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -1;
  position: relative;
  top: -80px;
}

当您开始滚动时,您会更改此页边距。但是,当再次滚动回顶部时,您不会将页边距重置为
-80px
,这将导致您在第一次加载页面和第二次单击按钮时得到不同的结果。

@JannisN另一个提示可能会考虑使用而不是修复。这非常有用您不必在开始滚动时使用填充或边距来修复页面。但是,请注意,它可能存在一些浏览器可对抗性问题。它是否简单到只需将“固定”替换为“粘滞”即可?有什么大的地方需要更改吗?@JannisN您需要删除负边距和顶部值,然后进行更改还有一些事情。我在这里编辑了你的JS提琴,并添加了一些评论,说“删除这个/添加这个到你需要更改的内容中”,这看起来很简单,效果也很好!非常感谢!我可以把
主页
也移到哪里去吗?当我点击主页按钮时,它并不会真正把我带到页面的最顶端。导航栏看起来很滑当你向下滚动一点点的时候,它就会消失。出于某种原因,它开始抖动。这是我的JSFIDLE:
@charset "utf-8";

/* CSS Document */

* {
  font-family: 'Roboto', sans-serif;

}

#container {
  width: 1280px;
  height: 100%;
  margin-left: auto;
  margin-right: auto;
}

body {
  background-color: white;
  margin: 128px 0 0 0;
}

/* Navigation */
#navlinks {
  margin: 0;
}

ul {
  color: black;
  list-style: none;
  float: right;
  margin-right: 20px;
  padding-top: 30px;
}

ul li {
  display: inline-table;
  margin-left: 5px;
  padding: 5px;
  border-bottom: 1.5px solid;
  border-bottom-color: white;
}

ul li a {
  color: black;
  text-decoration: none;
  padding: 10px;
}

/* Smart Navbar / weiß, wo man auf der Seite ist von https://stackoverflow.com/questions/19697696/change-underline-of-active-nav-by-section */
#navbar.fix {
  position: fixed;
  top: 0;
}

#navbar li.active {
  border-bottom: 1.5px solid;
  border-bottom-color: #f6bd60;
}

/* Smart Navbar Ende */

/* fixed Navigation von https://codepen.io/malZiiirA/pen/cbfED?css-preprocessor=none */
#navbar {
  border-bottom-style: solid;
  border-bottom-width: 1.25px;
  box-shadow: 0px 2.5px 5px rgba(0, 0, 0, 0.2);
  background-color: white;
  height: 128px;
  transition: 0.32s;
  position: fixed;
  top: 0;
  width: 1280px;
}

#navbar.shrink {
  height: 80px;
  line-height: 18px;
}

#navbar li {
  font-size: 1.2rem;
  font-weight: normal;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}

#navbar.shrink li {
  font-size: 1.2rem;
  margin-top: -30px;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}

#navbar img {
  height: 128px;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
}

#navbar.shrink img {
  height: 80px;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  transition: all 0.3s;
  margin: auto;
}

/* fixed nav Ende */

/*
#spacer {
  height: 128px;
  border-bottom: 4px solid;
}


  margin-top: 0 !important;
*/
#home {
  height: 100% !important;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -1;
  position: relative;
  top: -80px;
}

#wir-ueber-uns {
  height: 50px;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -2;
  background-color: lightblue;
  position: relative;
  top: -80px;
}

#aktionen {
  height: 100%;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -3;
  background-color: blue;
  position: relative;
  top: -80px;
}

#terminvereinbarung {
  height: 100%;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -4;
  background-color: red;
  position: relative;
  top: -80px;
}

#infos {
  height: 100%;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -5;
  background-color: yellow;
  position: relative;
  top: -80px;
}

#logo {
  margin-left: 50px;
}

#homebild {
  width: 100%;
  height: 100%;
}

#impressum {
  background-color: darkgreen;
}

/* Hover Effekt bei Navigation von https://github.com/IanLunn/Hover/blob/master/css/hover.css */
.hvr-sweep-to-top {
  display: inline-block;
  vertical-align: middle;
  -webkit-transform: perspective(1px) translateZ(0);
  transform: perspective(1px) translateZ(0);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
  position: relative;
  -webkit-transition-property: color;
  transition-property: color;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
}

.hvr-sweep-to-top:before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #f6bd60;
  -webkit-transform: scaleY(0);
  transform: scaleY(0);
  -webkit-transform-origin: 50% 100%;
  transform-origin: 50% 100%;
  -webkit-transition-property: transform;
  transition-property: transform;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-timing-function: ease-out;
  transition-timing-function: ease-out;
}

.hvr-sweep-to-top:hover,
.hvr-sweep-to-top:focus,
.hvr-sweep-to-top:active {
  color: white;
}

.hvr-sweep-to-top:hover:before,
.hvr-sweep-to-top:focus:before,
.hvr-sweep-to-top:active:before {
  -webkit-transform: scaleY(1);
  transform: scaleY(1);
}

/* Hover Effekt Ende */


/* Loader */
.loader {
  display: inline-block;
  width: 30px;
  height: 30px;
  position: relative;
  border: 4px solid #Fff;
  animation: loader 2s infinite ease;
}

.loader-inner {
  vertical-align: top;
  display: inline-block;
  width: 100%;
  background-color: #fff;
  animation: loader-inner 2s infinite ease-in;
}

@keyframes loader {
  0% {
    transform: rotate(0deg);
  }

  25% {
    transform: rotate(180deg);
  }

  50% {
    transform: rotate(180deg);
  }

  75% {
    transform: rotate(360deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

@keyframes loader-inner {
  0% {
    height: 0%;
  }

  25% {
    height: 0%;
  }

  50% {
    height: 100%;
  }

  75% {
    height: 100%;
  }

  100% {
    height: 0%;
  }
}

.loader-wrapper {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background-color: #242f3f;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* loader Ende */
//header Effekt beim scrollen

$(function() {
  var shrinkHeader = 100;
  $(window).scroll(function() {
    var scroll = getCurrentScroll();
    if (scroll >= shrinkHeader) {
      $('#navbar').addClass('shrink');
    } else {
      $('#navbar').removeClass('shrink');
    }
  });

  function getCurrentScroll() {
    return window.pageYOffset || document.documentElement.scrollTop;
  }
});
// JavaScript Document

$(document).ready(function() {

  var navTop = $('#navbar').offset().top;
  var navHeight = $('#navbar').height();
  var windowH = $(window).height();

  $('.section').height(windowH);

  $(document).scroll(function() {
    var st = $(this).scrollTop();

    //for the nav bar:
    if (st > navTop) {
      $('#navbar').addClass('fix');
      $('.section:eq(0)').css({
        'margin-top': navHeight
      }); //fix  scrolling issue due to the fix nav bar
    } else {
      $('#navbar').removeClass('fix');
      $('.section:eq(0)').css({
        'margin-top': '0'
      });
    }

    $('.section').each(function(index, element) {
      if (st + navHeight > $(this).offset().top && st + navHeight <= $(this).offset().top + $(this).height()) {
        $(this).addClass('active');

        var id = $(this).attr('id');
        $('a[href="#' + id + '"]').parent('li').addClass('active');
        // or $('#nav li:eq('+index+')').addClass('active');
      } else {
        $(this).removeClass('active');

        var id = $(this).attr('id');
        $('a[href="#' + id + '"]').parent('li').removeClass('active');
        //or $('#nav li:eq('+index+')').removeClass('active');
      }

    });

  });

});



//
#home {
  height: 100% !important;
  display: block;
  margin-top: -80px;
  padding-top: 80px;
  z-index: -1;
  position: relative;
  top: -80px;
}