javascript - jquery拖放问题

Question

我有下面的代码，使用我正在制作可拖动和可放置的东西的脚本。目前我有两 block 可拖动内容，如果正确的话可以将它们放在两个地方，然后系统将更改并说正确，我想知道是否有办法让我能够只创建 HTML div 并运行代码并将可拖动对象与可放置对象进行匹配。我有人有非技术背景，有基本的 HTML 知识，所以你现在如何添加 div 和删除它们，但他们能够处理脚本，我想知道，如果我的 ID 为 1-10 Draggable 内容与 dropable 1-10 相同，因此 id 1draggable 只能添加到 id 1 droppable。

<meta charset="utf-8">
  <link rel="stylesheet" href="https://code.jquery.com/ui/1.11.0/themes/smoothness/jquery-ui.css">
  <script src="https://code.jquery.com/jquery-1.10.2.js"></script>
  <script src="https://code.jquery.com/ui/1.11.0/jquery-ui.js"></script>
  <link rel="stylesheet" href="hhtps:/resources/demos/style.css">
  <style>
  #droppable,#droppable2 { width: 150px; height: 150px; padding: 0.5em; float: left; margin: 10px; }
  #draggable, #draggable2 { width: 100px; height: 100px; padding: 0.5em; float: left; margin: 10px 10px 10px 0; }
  </style>
  <script>
  $(function() {
    $( "#draggable, #draggable2" ).draggable();


    $( "#droppable" ).droppable({
      accept: "#draggable",
      drop: function( event, ui ) {
        $( this )
          .removeClass("ui-widget-header")
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
      },
      out: function( event, ui ) {
        $( this ).removeClass( "ui-state-highlight" ).addClass( "ui-widget-header" )
          .find( "p" )
            .html( "accept" );
      }
    });

  $( "#droppable2" ).droppable({
      accept: "#draggable2",
      drop: function( event, ui ) {
        $( this )
          .removeClass("ui-widget-header")
          .addClass( "ui-state-highlight" )
          .find( "p" )
            .html( "Dropped!" );
      },
      out: function( event, ui ) {
        $( this ).removeClass( "ui-state-highlight" ).addClass( "ui-widget-header" )
          .find( "p" )
            .html( "accept" );
      }
    });

  });
  </script>

<div id="draggable2" class="ui-widget-content">
  <p>I'm draggable but can't be dropped</p>
</div>

<div id="draggable" class="ui-widget-content">
  <p>Drag me to my target</p>
</div>

<div id="droppable" class="ui-widget-header">
  <p>accept: '#draggable'</p>
</div>

<div id="droppable2" class="ui-widget-header">
  <p>accept: '#draggable2'</p>
</div>

Answer 1

为此，您需要避免使用 HTML id 并开始使用类。以下是如何做到这一点，使用 working example :

您的 HTML:

<div id="draggable_2" class="ui-widget-content draggable-item">
    <p>draggable_2</p>
</div>
<div id="draggable" class="ui-widget-content draggable-item">
    <p>draggable</p>
</div>
<div class="ui-widget-header droppable-item" data-accept="#draggable">
    <p></p>
</div>
<div class="ui-widget-header droppable-item" data-accept="#draggable_2">
    <p></p>
</div>
<div class="ui-widget-header droppable-item" data-accept="#draggable_3">
    <p></p>
</div>

您的 JavaScript:

$(function () {
    $(".draggable-item").draggable();

    $('.droppable-item').each(function (i, ele) {
        // Gets the accepted from the HTML property "data-accept"
        var accept = $(this).data('accept');

        // This is just to show what the item accepts. you can remove it.
        $(this).find('p').text('accepts: ' + accept);

        // Init the jQuery UI droppable()
        $(this).droppable({
            accept: accept,
            drop: function (event, ui) {
                $(this)
                    .removeClass("ui-widget-header")
                    .addClass("ui-state-highlight")
                    .find("p")
                    .html("Dropped!");
            },
            out: function (event, ui) {
                $(this).removeClass("ui-state-highlight").addClass("ui-widget-header")
                    .find("p")
                .html("accept: " + accept);
            }
        });
    });
});