javascript - Jquery 可拖动/可放置和可排序组合

Question

我被要求创建一个正方形网格，其中每个正方形可能包含也可能不包含链接，并且这些链接应该能够在网格中移动。

我认为 draggable/droppable 将是可行的方法并且它工作正常，但是，现在我们希望能够让 draggables 在一个拖放到另一个之上时交换。所以现在看起来 sortable 是可行的方法。但是，sortable 看起来更像是用于列表，而我并没有把它写成列表。

是否有一种简单的方法可以使我目前的工作正常进行，或者我是否需要使用 sortable 完全重写它？我是 javascript 的新手，我花了一段时间才走到这一步，我不是要代码，但我害怕不得不再次弄清楚整个事情!有什么意见吗？

这是我的一小段代码:http://jsfiddle.net/kvVkT/

和代码:

html

<div id="gridcontainer">
    <div id="-2:-2" class="droppable occupied">
        <a href="" id ="508" class="bookmark draggable white" title="white" "target="_blank">1</a>
    </div>
    <div id="-2:-1" class="droppable">2</div>
    <div style="clear:both"></div>
    <div id="-2:0" class="droppable">3</div>
    <div id="-2:1" class="droppable occupied">
        <a href="" id ="567" class="bookmark draggable white" title="white" "target="_blank">4</a>
    </div>
    <div style="clear:both"></div>
</div>

CSS

#gridcontainer{position:relative;padding:25px;color:#ff0004;background:#ffffff;}
.droppable{width:65px; height:65px;float:left; margin:5px;background:#000000;}
.bookmark {float:left;width:65px; height:65px;display:block;position:absolute;}
.position{float:left;width:65px; height:65px;display:block;}
.position:hover{background-image:url(../img/tilehover.png);}
.bookmark.ui-draggable-dragging {-moz-box-shadow: 0 0 5px #d9d9d9; -webkit-box-shadow: 0 0 5px #d9d9d9; box-shadow: 0 0 5px #d9d9d9;}
.draggable{ background:#888888;}
[draggable] {
  -moz-user-select: none;
  -khtml-user-select: none;
  -webkit-user-select: none;
  user-select: none;
}

JavaScript

$('.draggable').draggable({ start: function() {$('#dropdownAddTile').slideDown();},  stop: function() {$('#dropdownAddTile').slideUp();}, containment: '#container', snap:'.droppable', snapMode:'inner', revert:'invalid',snapTolerance: 32});
$('.droppable').droppable({drop: handleDropEvent, accept: function(e){if(e.hasClass('draggable')) { if (!$(this).hasClass('occupied')) {return true; }}}});
function handleDropEvent( event, ui ) {
      event.preventDefault();
      var draggable = ui.draggable;
      var droppable = $(this);
      var droppableId = $(this).attr("id");
      var draggableId = ui.draggable.attr("id");
      $('.draggable').draggable({containment: '#container', snap:'.droppable', snapMode:'inner', revert:'invalid',snapTolerance: 32});
      $('.droppable').droppable({drop: handleDropEvent, accept: function(e){if(e.hasClass('draggable')) { if (!$(this).hasClass('occupied')) {return true; }}}});
      var initPosit = ui.draggable.parent().attr('id');
      //save new position
      $.post("tiles/updateTilePosition", { draggableId:draggableId, droppableId: droppableId }).done(function(data) {
         //alert(data);
      })
      $(this).addClass('occupied');
      ui.draggable.parent().removeClass('occupied');
      if($(ui.draggable).parent() !==$(this)){
            $(ui.draggable).appendTo($( this ));
      }
}

感谢收到的任何意见

Answer 1

首先，永远不要使用以数字或符号开头的 ID。根据这个solution :

ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").

---

现在让我们清理您的一些代码。对于你目前的情况，我建议使用.draggable()和 .droppable() .

我从头开始，但保留了 jsfiddle 中使用的 draggable 和 droppable 选项.这是我想出的(随意更改它的任何方面):

演示: http://jsfiddle.net/dirtyd77/Y8dLz/
http://fiddle.jshell.net/dirtyd77/Y8dLz/show/

JavaScript:

$(function () {
    $('#container div').draggable({
        containment: "#container",
        helper: 'clone',
        snap: true,
        snapMode: 'inner',
        snapTolerance: 32,
        revert: 'invalid'
    });

    $('#container div').droppable({
        hoverClass: 'ui-state-highlight',
        drop: function (event, ui) {
            var _drop = $(this), 
                _drag = $(ui.draggable),
                _dropChildren = _drop.children(), //original drop children
                _dragChilden = _drag.children(); //original drag children

            if(_dropChildren.length > 0){
                _dropChildren.appendTo(_drag);
            }

            _dragChilden.appendTo(_drop);
        }
    });
});

HTML:

<div id="container">    
    <div>
        <a href="#somelink1" class="link1">Link 1</a>
    </div>  

    <div></div>

    <div>
        <a href="#somelink2" class="link2">Link 2</a>
    </div>

    <div></div>

    <div>
        <a href="#somelink3" class="link3">Link 3</a>
    </div>

    <div>
        <a href="#somelink1" class="link1">Link 4</a>
        <a href="#somelink3" class="link3">Link 5</a>
    </div>
</div>

CSS:

div:not(#container) {
    border:1px solid orange;
}
#container {
    padding:20px;
    margin:10px;
    float: left; /* needed for containment option */
    width: 336px;
    height: auto;
    border:1px solid green;
}
#container div {
    margin: 4px;
    padding: 0px;
    float: left;
    width: 100px;
    height: 90px;
    text-align: center;
}
.link1{
    color: purple;   
}
.link2{
    color: red;   
}
.link3{
    color: green;   
}

希望这就是您要找的!如果您需要任何进一步的解释或有任何其他问题，请告诉我!编码愉快!