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自定义滚动动画-暂停部分和水平滚动元素

vertical-scrolling horizontal-scrolling javascript

-1

The Old County · 技术社区 · 5 年前

有一些单页应用程序,用户可以在其中进行垂直滚动,但页面看起来暂停并水平滚动,然后清除一个部分。

我添加了jquerywayward函数来检测何时显示嵌套排列。

像这样:

这里是HTML片段。幻灯片1是一个完整的页面元素,幻灯片5和6也是如此。它们可以是菜单的锚定。我感兴趣的是在这里创建的行为-当用户接近嵌套单元时-它锁定在幻灯片2的顶部,然后转换幻灯片3和4。

$win.on('scroll', function() {
  var top = $win.scrollTop() / 3;
  console.log("top", top);
  $nested.css('transform', 'translate(' + -top + 'px, 0)');
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="section">slide 1</div>
<div class="nested">
  <div class="section first">slide 2</div>
  <div class="section second">slide 3</div>
  <div class="section third">slide 4</div>
</div>
<div class="section">slide 5</div>
<div class="section">slide 6</div>

JSFiddle Example

0 回复 | 直到 5 年前

Munim Munna Gandalf 5 年前

当幻灯片成为固定元素时,它会保留垂直空间。

下面的代码可以处理同一页中的多个幻灯片,您还可以实现一旦你有了这个想法,你自己的。

$('.nested').each(function() {
  let $window = $(window), $body = $('body');
  let $nested = $(this), $nestedPlaceholder = $nested.parent();
  let verticalScrollRange, upperMargin, lowerMargin;
  $window.resize(function(){
    $nested.removeClass("sticky").css({left: 0});
    let placeholderHeight = $nestedPlaceholder.css({height: ''}).height();
    verticalScrollRange = placeholderHeight - $window.height();
    upperMargin = $nestedPlaceholder.offset().top;
    lowerMargin = upperMargin + verticalScrollRange;
    $nestedPlaceholder.height(placeholderHeight);
  });
  $window.scroll(function() {
    let scrollTop = $window.scrollTop();
    if (scrollTop > upperMargin && scrollTop < lowerMargin) {
      $nested.addClass("sticky");
      let horizontalScrollRange = $nested.width() - $body.width();
      let verticalScrollPosition = scrollTop - upperMargin;
      let horizontalScrollPosition = verticalScrollPosition / verticalScrollRange * horizontalScrollRange;
      $nested.css({left: -horizontalScrollPosition});
    } else {
      $nested.removeClass("sticky");
    }
  });
  $window.resize();
});

body {
  background: linear-gradient(to bottom, #ffcb77 0%, #deaaff 100%);
}

.section {
  height: 100vh;
  font-size: 5em;
  text-align: center;
  position: relative;
  border: 1px solid red;
}

.nested .section {
  width: 100vw;
}

.nested-placeholder {
  overflow: hidden;
}

.sticky {
  position: fixed;
  z-index: 1;
  top: 0;
  height: 100vh;
  white-space: nowrap;
}

.sticky .section {
  display: inline-block;
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="section">Start scrolling down!</div>
<div class="section">slide 1</div>
<div class="nested-placeholder">
  <div class="nested">
    <div class="section first">slide 2</div>
    <div class="section second">slide 3</div>
    <div class="section third">slide 4</div>
  </div>
</div>
<div class="section">slide 5</div>
<div class="section">slide 6</div>

The Old County 5 年前

https://jsfiddle.net/zny0c8s6/

当嵌套的幻灯片到达页面顶部时,会向嵌套中添加一个粘性类。这将固定批次位置,并将嵌套转换为松散的旋转木马。当用户继续向下滚动时,嵌套将水平平移。在最后一个嵌套的幻灯片被清除之后,我已经移除了粘滞类-为了让用户出现在正常的旅程中,我尝试将嵌套固定到幻灯片的高度和计数。尽管需要解决反向问题——如果有多个巢穴的话也是如此。

$nested.waypoint(function(direction) {    
  var distance = $nested.offset().top;
  var $nestedHeight = $nested.height();
  var $nestedCount = $nested.find(" > .section").length;
  var $nestedSectionWidth = $nested.next(".section").eq(0).width();

  var clearNestedWidth = $nestedSectionWidth * $nestedCount;
  var $window = $(window);

  $window.scroll(function() {
    if ($window.scrollTop() >= distance) {
      // Your div has reached the top        
      $nested.addClass("sticky");

      var $nestedCompactWidth = $nested.width();    
      var $win = $(window);

      $win.on('scroll', function() {
        var top = $win.scrollTop() / 3;   
        $nested.css('transform', 'translate(' + -top + 'px, 0)');

        if (top >= clearNestedWidth) {
          console.log("cleared slides - now clear sticky")
          $nested.removeClass("sticky");              
          $nested.css('height', $nestedHeight);
          //set scroll to end of slide 2
        }
      });

    } else {
      //$nested.removeClass("sticky");
    }
  });


}, {
  offset: '50%'
});