jQuery UI 实例 - 放置（Droppable）

jQuery UI 教程 · 2019-04-05 07:57:13

为可拖拽小部件创建目标。

如需了解更多有关 droppable 交互的细节，请查看 API 文档 可放置小部件（Droppable Widget）。

默认功能

在任意的 DOM 元素上启用 droppable 功能，并为可拖拽小部件创建目标。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 默认功能</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  #draggable { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
  #droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
  </style>
  <script>
  $(function() {
    $( "#draggable" ).draggable();
    $( "#droppable" ).droppable({
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
      }
    });
  });
  </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
  <p>请把我拖拽到目标处！</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>请放置在这里！</p>
</div>
 
 
</body>
</html>

接受

使用 accept 选项指定目标 droppable 接受哪一个元素（或元素组）。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 接受</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  #droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
  #draggable, #draggable-nonvalid { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
  </style>
  <script>
  $(function() {
    $( "#draggable, #draggable-nonvalid" ).draggable();
    $( "#droppable" ).droppable({
      accept: "#draggable",
      activeClass: "ui-state-hover",
      hoverClass: "ui-state-active",
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
      }
    });
  });
  </script>
</head>
<body>
 
<div id="draggable-nonvalid" class="ui-widget-content">
  <p>我是不能被放置的 draggable</p>
</div>
 
<div id="draggable" class="ui-widget-content">
  <p>请拖拽我到目标</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>accept: '#draggable'</p>
</div>
 
 
</body>
</html>

防止传播

当使用嵌套的 droppable 时 — 例如，您可以有一个树形的可编辑的目录结构，带有文件夹和文档节点 — greedy 选项设置为 true 来防止当 draggable 被放置在子节点（droppable）上时的事件传播。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 防止传播</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  #draggable { width: 100px; height: 40px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
  #droppable, #droppable2 { width: 230px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
  #droppable-inner, #droppable2-inner { width: 170px; height: 60px; padding: 0.5em; float: left; margin: 10px; }
  </style>
  <script>
  $(function() {
    $( "#draggable" ).draggable();
 
    $( "#droppable, #droppable-inner" ).droppable({
      activeClass: "ui-state-hover",
      hoverClass: "ui-state-active",
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "> p" )
            .html( "Dropped!" );
        return false;
      }
    });
 
    $( "#droppable2, #droppable2-inner" ).droppable({
      greedy: true,
      activeClass: "ui-state-hover",
      hoverClass: "ui-state-active",
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "> p" )
            .html( "Dropped!" );
      }
    });
  });
  </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
  <p>请拖拽我到目标</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>外部 droppable</p>
  <div id="droppable-inner" class="ui-widget-header">
    <p>内部 droppable（不带有 greedy）</p>
  </div>
</div>
 
<div id="droppable2" class="ui-widget-header">
  <p>外部 droppable</p>
  <div id="droppable2-inner" class="ui-widget-header">
    <p>内部 droppable（带有 greedy）</p>
  </div>
</div>
 
 
</body>
</html>

还原 draggable 的位置

当带有布尔值 revert 选项的 draggable 停止拖拽时，返回 draggable（或它的助手）到原始位置。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 还原 draggable 的位置</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  #draggable, #draggable2 { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
  #droppable { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
  </style>
  <script>
  $(function() {
    $( "#draggable" ).draggable({ revert: "valid" });
    $( "#draggable2" ).draggable({ revert: "invalid" });
 
    $( "#droppable" ).droppable({
      activeClass: "ui-state-default",
      hoverClass: "ui-state-hover",
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "已放置！" );
      }
    });
  });
  </script>
</head>
<body>
 
<div id="draggable" class="ui-widget-content">
  <p>当被放置在目标上时还原</p>
</div>
 
<div id="draggable2" class="ui-widget-content">
  <p>当未被放置在目标上时还原</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>请放置在这里</p>
</div>
 
 
</body>
</html>

购物车演示

演示如何使用折叠面板来展示产品的目录结构，使用拖拽和放置来添加产品到购物车，购物车中的产品是可排序的。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 购物车演示</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  h1 { padding: .2em; margin: 0; }
  #products { float:left; width: 500px; margin-right: 2em; }
  #cart { width: 200px; float: left; margin-top: 1em; }
  /* 定义列表样式，以便最大化 droppable */
  #cart ol { margin: 0; padding: 1em 0 1em 3em; }
  </style>
  <script>
  $(function() {
    $( "#catalog" ).accordion();
    $( "#catalog li" ).draggable({
      appendTo: "body",
      helper: "clone"
    });
    $( "#cart ol" ).droppable({
      activeClass: "ui-state-default",
      hoverClass: "ui-state-hover",
      accept: ":not(.ui-sortable-helper)",
      drop: function( event, ui ) {
        $( this ).find( ".placeholder" ).remove();
        $( "<li></li>" ).text( ui.draggable.text() ).appendTo( this );
      }
    }).sortable({
      items: "li:not(.placeholder)",
      sort: function() {
        // 获取由 droppable 与 sortable 交互而加入的条目
        // 使用 connectWithSortable 可以解决这个问题，但不允许您自定义 active/hoverClass 选项
        $( this ).removeClass( "ui-state-default" );
      }
    });
  });
  </script>
</head>
<body>
 
<div id="products">
  <h1 class="ui-widget-header">产品</h1>
  <div id="catalog">
    <h2><a href="#">T-Shirts</a></h2>
    <div>
      <ul>
        <li>Lolcat Shirt</li>
        <li>Cheezeburger Shirt</li>
        <li>Buckit Shirt</li>
      </ul>
    </div>
    <h2><a href="#">Bags</a></h2>
    <div>
      <ul>
        <li>Zebra Striped</li>
        <li>Black Leather</li>
        <li>Alligator Leather</li>
      </ul>
    </div>
    <h2><a href="#">Gadgets</a></h2>
    <div>
      <ul>
        <li>iPhone</li>
        <li>iPod</li>
        <li>iPad</li>
      </ul>
    </div>
  </div>
</div>
 
<div id="cart">
  <h1 class="ui-widget-header">购物车</h1>
  <div class="ui-widget-content">
    <ol>
      <li class="placeholder">添加产品到这里</li>
    </ol>
  </div>
</div>
 
 
</body>
</html>

简单的照片管理器

您可以通过拖拽照片到回收站或者点击回收站图标来删除照片。

您可以通过拖拽照片到相册或者点击回收利用图标来还原照片。

您可以通过点击缩放图标来查看大图。jQuery UI 对话框（dialog）部件用于模态窗口。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 简单的照片管理器</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  #gallery { float: left; width: 65%; min-height: 12em; }
  .gallery.custom-state-active { background: #eee; }
  .gallery li { float: left; width: 96px; padding: 0.4em; margin: 0 0.4em 0.4em 0; text-align: center; }
  .gallery li h5 { margin: 0 0 0.4em; cursor: move; }
  .gallery li a { float: right; }
  .gallery li a.ui-icon-zoomin { float: left; }
  .gallery li img { width: 100%; cursor: move; }
 
  #trash { float: right; width: 32%; min-height: 18em; padding: 1%; }
  #trash h4 { line-height: 16px; margin: 0 0 0.4em; }
  #trash h4 .ui-icon { float: left; }
  #trash .gallery h5 { display: none; }
  </style>
  <script>
  $(function() {
    // 这是相册和回收站
    var $gallery = $( "#gallery" ),
      $trash = $( "#trash" );
 
    // 让相册的条目可拖拽
    $( "li", $gallery ).draggable({
      cancel: "a.ui-icon", // 点击一个图标不会启动拖拽
      revert: "invalid", // 当未被放置时，条目会还原回它的初始位置
      containment: "document",
      helper: "clone",
      cursor: "move"
    });
 
    // 让回收站可放置，接受相册的条目
    $trash.droppable({
      accept: "#gallery > li",
      activeClass: "ui-state-highlight",
      drop: function( event, ui ) {
        deleteImage( ui.draggable );
      }
    });
 
    // 让相册可放置，接受回收站的条目
    $gallery.droppable({
      accept: "#trash li",
      activeClass: "custom-state-active",
      drop: function( event, ui ) {
        recycleImage( ui.draggable );
      }
    });
 
    // 图像删除功能
    var recycle_icon = "<a href='link/to/recycle/script/when/we/have/js/off' title='还原图像' class='ui-icon ui-icon-refresh'>还原图像</a>";
    function deleteImage( $item ) {
      $item.fadeOut(function() {
        var $list = $( "ul", $trash ).length ?
          $( "ul", $trash ) :
          $( "<ul class='gallery ui-helper-reset'/>" ).appendTo( $trash );
 
        $item.find( "a.ui-icon-trash" ).remove();
        $item.append( recycle_icon ).appendTo( $list ).fadeIn(function() {
          $item
            .animate({ width: "48px" })
            .find( "img" )
              .animate({ height: "36px" });
        });
      });
    }
 
    // 图像还原功能
    var trash_icon = "<a href='link/to/trash/script/when/we/have/js/off' title='删除图像' class='ui-icon ui-icon-trash'>删除图像</a>";
    function recycleImage( $item ) {
      $item.fadeOut(function() {
        $item
          .find( "a.ui-icon-refresh" )
            .remove()
          .end()
          .css( "width", "96px")
          .append( trash_icon )
          .find( "img" )
            .css( "height", "72px" )
          .end()
          .appendTo( $gallery )
          .fadeIn();
      });
    }
 
    // 图像预览功能，演示 ui.dialog 作为模态窗口使用
    function viewLargerImage( $link ) {
      var src = $link.attr( "href" ),
        title = $link.siblings( "img" ).attr( "alt" ),
        $modal = $( "img[src$='" + src + "']" );
 
      if ( $modal.length ) {
        $modal.dialog( "open" );
      } else {
        var img = $( "<img alt='" + title + "' width='384' height='288' style='display: none; padding: 8px;' />" )
          .attr( "src", src ).appendTo( "body" );
        setTimeout(function() {
          img.dialog({
            title: title,
            width: 400,
            modal: true
          });
        }, 1 );
      }
    }
 
    // 通过事件代理解决图标行为
    $( "ul.gallery > li" ).click(function( event ) {
      var $item = $( this ),
        $target = $( event.target );
 
      if ( $target.is( "a.ui-icon-trash" ) ) {
        deleteImage( $item );
      } else if ( $target.is( "a.ui-icon-zoomin" ) ) {
        viewLargerImage( $target );
      } else if ( $target.is( "a.ui-icon-refresh" ) ) {
        recycleImage( $item );
      }
 
      return false;
    });
  });
  </script>
</head>
<body>
 
<div class="ui-widget ui-helper-clearfix">
 
<ul id="gallery" class="gallery ui-helper-reset ui-helper-clearfix">
  <li class="ui-widget-content ui-corner-tr">
    <h5 class="ui-widget-header">High Tatras</h5>
    <img src="/wp-content/uploads/2014/03/high_tatras_min.jpg" alt="High Tatras 的最高峰" width="96" height="72">
    <a href="/wp-content/uploads/2014/03/high_tatras.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
    <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
  </li>
  <li class="ui-widget-content ui-corner-tr">
    <h5 class="ui-widget-header">High Tatras 2</h5>
    <img src="/wp-content/uploads/2014/03/high_tatras2_min.jpg" alt="绿山湖畔的小屋" width="96" height="72">
    <a href="/wp-content/uploads/2014/03/high_tatras2.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
    <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
  </li>
  <li class="ui-widget-content ui-corner-tr">
    <h5 class="ui-widget-header">High Tatras 3</h5>
    <img src="/wp-content/uploads/2014/03/high_tatras3_min.jpg" alt="计划登高" width="96" height="72">
    <a href="/wp-content/uploads/2014/03/high_tatras3.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
    <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
  </li>
  <li class="ui-widget-content ui-corner-tr">
    <h5 class="ui-widget-header">High Tatras 4</h5>
    <img src="/wp-content/uploads/2014/03/high_tatras4_min.jpg" alt="在 Kozi kopka 的顶部" width="96" height="72">
    <a href="/wp-content/uploads/2014/03/high_tatras4.jpg" title="查看大图" class="ui-icon ui-icon-zoomin">查看大图</a>
    <a href="link/to/trash/script/when/we/have/js/off" title="删除图像" class="ui-icon ui-icon-trash">删除图像</a>
  </li>
</ul>
 
<div id="trash" class="ui-widget-content ui-state-default">
  <h4 class="ui-widget-header"><span class="ui-icon ui-icon-trash">回收站</span> 回收站</h4>
</div>
 
</div>
 
 
</body>
</html>

视觉反馈

当悬停在 droppable 上时，或者当 droppable 被激活（即一个可接受的 draggable 被放置在 droppable 上）时，改变 droppable 的外观。使用 hoverClass 或 activeClass 选项来分别指定 class。

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>jQuery UI 放置（Droppable） - 视觉反馈</title>
  <link rel="stylesheet" href="//code.jquery.com/ui/1.10.4/themes/smoothness/jquery-ui.css">
  <script src="//code.jquery.com/jquery-1.9.1.js"></script>
  <script src="//code.jquery.com/ui/1.10.4/jquery-ui.js"></script>
  <link rel="stylesheet" href="http://jqueryui.com/resources/demos/style.css">
  <style>
  #draggable, #draggable2 { width: 90px; height: 90px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
  #droppable, #droppable2 { width: 120px; height: 120px; padding: 0.5em; float: left; margin: 10px; }
  h3 { clear: left; }
  </style>
  <script>
  $(function() {
    $( "#draggable" ).draggable();
    $( "#droppable" ).droppable({
      hoverClass: "ui-state-hover",
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
      }
    });
 
    $( "#draggable2" ).draggable();
    $( "#droppable2" ).droppable({
      accept: "#draggable2",
      activeClass: "ui-state-default",
      drop: function( event, ui ) {
        $( this )
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
      }
    });
  });
  </script>
</head>
<body>
 
<h3>当悬停在 droppable 上时的反馈：</h3>
 
<div id="draggable" class="ui-widget-content">
  <p>请拖拽我到目标</p>
</div>
 
<div id="droppable" class="ui-widget-header">
  <p>请放置在这里</p>
</div>
 
<h3>当激活 draggable 时的反馈：</h3>
 
<div id="draggable2" class="ui-widget-content">
  <p>请拖拽我到目标</p>
</div>
 
<div id="droppable2" class="ui-widget-header">
  <p>请放置在这里</p>
</div>
 
 
</body>
</html>

点击查看所有 jQuery UI 教程 文章: https://www.codercto.com/courses/l/41.html

查看所有标签

码农书籍
离散数学及其应用（原书第6版·本科教学版）

离散数学及其应用（原书第6版·本科教学版）

[美] Kenneth H. Rosen / 袁崇义、屈婉玲、张桂芸 / 机械工业出版社 / 2011-11 / 49.00元

《离散数学及其应用》一书是介绍离散数学理论和方法的经典教材，已经成为采用率最高的离散数学教材，仅在美国就被600多所高校用作教材，并获得了极大的成功。第6版在前5版的基础上做了大量的改进，使其成为更有效的教学工具。 本书基于该书第6版进行改编，保留了国内离散数学课程涉及的基本内容，更加适合作为国内高校计算机及相关专业本科生的离散数学课程教材。本书的具体改编情况如下： · 补充了关于范式......一起来看看 《离散数学及其应用（原书第6版·本科教学版）》 这本书的介绍吧!

码农工具
URL 编码/解码
URL 编码/解码

URL 编码/解码

UNIX 时间戳转换
UNIX 时间戳转换

UNIX 时间戳转换

正则表达式在线测试
正则表达式在线测试

正则表达式在线测试

  • New
  • 文章
  • 话题
  • 教程
    • Tips
    def hello()  
    return "Hello , World"    
end
    版权所有，保留一切权利！© 2018-2024 码农网 粤ICP备17054400号-3