Question

我有一个页面，其中有一个main-section部分，顶部栏占据屏幕高度的100％。由于我的top-bar为77px高，因此在css中设置如下：

#app {
  position: relative;
  height: 100%;
  width: 100%;
  background-image: url('/img/cover.png');
  background-size: cover;
}

#main-section {
  position: absolute;
  top: 77px;
  left: 0;
  width: 100%;
}

#magazine-detail {
  position: absolute;
  top: 77px;
  left: 0;
  width: 100%;
}

这是它在html中的样子：

<div id="app">

    @section('topBar')
      @include('customer.layouts.partials.top-bar')
    @show

    <div id="main-section">
      @section('header')
        @include('customer.layouts.partials.header')
      @show

      @section('carousel')
        @include('customer.layouts.partials.carousel')
      @show
    </div>

    <div id="magazine-detail">
      @section('magazine-detail')
        @include('customer.layouts.partials.magazine-detail')
      @show
    </div>

    <div class="large-10 large-centered columns content">
      @yield('content')
    </div>
  </div>

最初main-section可见，隐藏magazine-detail。点击按钮杂志 - 细节占据主要部分的空间。我用jade中的fadeIn，fadeOut这样做了。文件：

$('#magazine-detail').fadeIn(2000);
$('#main-section').fadeOut(2000);

我想知道如何让它变得淡入淡出，以至于它看起来像是从底部到顶部，就像抽屉那种效果一样？

Answer 1

你可以使用jqueryui＆＃34; drop＆＃34;效果，这是我使用docs制作的小提琴（api.jqueryui.com/drop-effect /）

https://jsfiddle.net/6L0gkvhq/1/

    $('#button').click(function() {
      $("#toggle").toggle("drop", {direction: "down"});
      $("#main").toggle("fade");
    });

或使用api.jquery.com/animate/

Answer 2

如果我理解你的问题，动画clip可能是你最好的选择：

<强> CSS：

#magazine-detail {
  position: absolute;
  top: 77px;
  display: none;
}

<强> JavaScript的：

var $md = $('#magazine-detail');

    $md.show();
    $('#main-section').fadeOut(2000);
    $({val: $md.height()}).animate(
    {val: 0},
    {
        duration: 2000,
        step: function (now) {
        $md.css('clip', 
                'rect(' + now + 'px, ' + $md.width() + 'px, ' + $md.height() + 'px, 0px)'
               );
      } 
    }
  );

<强>段：

＆＃13;

$('button').click(function() {
  var $md = $('#magazine-detail');

  $md.show();
  $('#main-section').fadeOut(2000);
  $({val: $md.height()}).animate(
  	{val: 0},
    {
     duration: 2000,
     step: function (now) {
     $md.css('clip',	
             'rect(' + now + 'px, ' + $md.width() + 'px, ' + $md.height() + 'px, 0px)'
            );
    } 
   }
  );
});

＆＃13;

div {
  font: 16px arial;
  width: 600px;
}

#main-section {
  position: absolute;
  top: 77px;
}

#magazine-detail {
  position: absolute;
  top: 77px;
  display: none;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button>
  Show detail
</button>
<div id="main-section">
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.<br>
<img src="http://lorempixel.com/400/100/">
</div>

<div id="magazine-detail">
<img src="http://lorempixel.com/200/100/"><br>
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem.

</div>

＆＃13;

从底部到顶部淡入隐藏元素

2 个答案: