script.aculo.us Drag & Drop onDrop Option

Last Updated : 20 Nov, 2020

This script.aculo.us Drag & Drop onDrop Option is used to call the callback function which is called when a suitable drag-gable element is dropped onto the drop target and the target accepts it.

Syntax:

Droppables.add('element', 
    {onDrop: 'callbackFunction'}
);

Values:

function: This option takes the callback function.

Example:

HTML

<!DOCTYPE html>
<html>

<head>
    <script type="text/javascript" 
        src="prototype.js">
    </script>
    
    <script type="text/javascript"
        src="scriptaculous.js?load = effects,controls">
    </script>
    
    <script type="text/javascript">
        window.onload = function () {
            $A($('draggables').getElementsByTagName('img'))
                .each(function (item) {
                    new Draggable(item, { 
                        revert: true, 
                        ghosting: true 
                    });
                });

            Droppables.add('droparea', { 
                hoverclass: 'hoverActive', 
                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);
            alert("Image dropped successully")
        }
    </script>

    <style type="text/css">
        #draggables {
            width: 550px;
            height: 73px;
        }

        #gfg {
            width: 550px;
            height: 73px;
        }

        #droparea {
            float: left;
            width: 650px;
            height: 90px;
            border: 2px solid gray;
            text-align: center;
            font-size: 16px;
            padding: 12px;
        }
    </style>
</head>

<body>
    <div>
        <h1 style="color: green">
            GeeksforGeeks
        </h1>

        <p>A Computer Science Portal for Geeks</p>
    </div>

    <strong>
        script.aculo.us Drag & Drop 
        onDrop Option
    </strong>
    
    <div id="draggables">
        <img src=
"https://media.geeksforgeeks.org/wp-content/cdn-uploads/20200817185016/gfg_complete_logo_2x-min.png">
    </div>
    
    <br>
    <div id="droparea">
        Drag the Image and Drop Your 
        Image in this area
    </div>
</body>

</html>

Output: You can see the alert showing after successfully dropping the image.

script.aculo.us Drag & Drop onDrag Option

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script.aculo.us Drag & Drop onDrop Option

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