script.aculo.us 拖放接受选项

此 script.aculo.us 拖放接受选项用于创建一个活动接受条件，您可以在其中将可拖动元素拖动到放置区域。在该放置区域中，如果接受类与可拖动元素的类相同，则将放置该元素。

句法：

Droppables.add('element', {accept: 'cssClass'});

示例：在此示例中，两个图像都是可拖动的，但放置区域仅接受图像标记类为“gfg”的位置。

  

    
    
  
    
    
  
    
        window.onload = function () {
            $A($("draggables").getElementsByTagName(
                "img")).each(function (item) {
                    new Draggable(
                        item, { revert: true, ghosting: true });
                });
  
            Droppables.add(
                "droparea", {
                    hoverclass: "hoverActive",
                accept: "gfg", onDrop: moveItem
            });
  
            // Set drop area default non cleared.
            $("droparea").cleared = false;
        };
  
        function moveItem(draggable, droparea) {
            if (!droparea.cleared) {
                droparea.innerHTML = "";
                droparea.cleared = true;
            }
  
            draggable.parentNode.removeChild(draggable);
            droparea.appendChild(draggable);
        }
    
  
    
        #draggables {
            width: 550px;
            height: 73px;
        }
  
        #droparea {
            float: left;
            width: 650px;
            height: 90px;
            border: 2px solid gray;
            text-align: center;
            font-size: 16px;
            padding: 12px;
        }
    

  

    
        
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        script.aculo.us Drag & Drop accept Option
    
      
    
        
        
    
      
    
        Drag the Image and Drop Your 
        Image in this area
    

  

输出：

• 拖放之前：
• 拖放后：