Question

我正在使用jqueryui draggable我必须拖动元素并保存数据库中的位置，以便下次如果我们加载页面，它将根据先前的调整显示，如果第一项是在第五个元素的底部拖动然后下一次它将显示在页面加载的第五个元素下面。我的问题是我们如何在拖动后获得位置。应该感谢任何帮助。

<style>
ul { list-style-type: none; margin: 0; padding: 0; margin-bottom: 10px; }
li { margin: 5px; padding: 5px; width: 150px; }
</style>
<script>
$(function() {
$( "#sortable" ).sortable({
revert: true
});
$( "#draggable" ).draggable({
connectToSortable: "#sortable",
helper: "clone",
revert: "invalid"
});
$( "ul, li" ).disableSelection();
});
</script>
</head>
<body>

<ul id="sortable">
<li class="ui-state-default">Item 1</li>
<li class="ui-state-default">Item 2</li>
<li class="ui-state-default">Item 3</li>
<li class="ui-state-default">Item 4</li>
<li class="ui-state-default">Item 5</li>
</ul>

example

Answer 1

检查此示例和updateCounterStatus功能：

<style>
  #draggable { width: 16em; padding: 0 1em; }
  #draggable ul li { margin: 1em 0; padding: 0.5em 0; } * html #draggable ul li { height: 1%; }
  #draggable ul li span.ui-icon { float: left; }
  #draggable ul li span.count { font-weight: bold; }
  </style>
  <script>
  $(function() {
    var $start_counter = $( "#event-start" ),
      $drag_counter = $( "#event-drag" ),
      $stop_counter = $( "#event-stop" ),
      counts = [ 0, 0, 0 ];

    $( "#draggable" ).draggable({
      start: function() {
        counts[ 0 ]++;
        updateCounterStatus( $start_counter, counts[ 0 ] );
      },
      drag: function() {
        counts[ 1 ]++;
        updateCounterStatus( $drag_counter, counts[ 1 ] );
      },
      stop: function() {
        counts[ 2 ]++;
        updateCounterStatus( $stop_counter, counts[ 2 ] );
      }
    });

    function updateCounterStatus( $event_counter, new_count ) {
      // first update the status visually...
      if ( !$event_counter.hasClass( "ui-state-hover" ) ) {
        $event_counter.addClass( "ui-state-hover" )
          .siblings().removeClass( "ui-state-hover" );
      }
      // ...then update the numbers
      $( "span.count", $event_counter ).text( new_count );
    }
  });
  </script>
</head>
<body>

<div id="draggable" class="ui-widget ui-widget-content">

  <p>Drag me to trigger the chain of events.</p>

  <ul class="ui-helper-reset">
    <li id="event-start" class="ui-state-default ui-corner-all"><span class="ui-icon ui-icon-play"></span>"start" invoked <span class="count">0</span>x</li>
    <li id="event-drag" class="ui-state-default ui-corner-all"><span class="ui-icon ui-icon-arrow-4"></span>"drag" invoked <span class="count">0</span>x</li>
    <li id="event-stop" class="ui-state-default ui-corner-all"><span class="ui-icon ui-icon-stop"></span>"stop" invoked <span class="count">0</span>x</li>
  </ul>
</div>

Jquery拖动和项目位置

1 个答案: