Drag and drop in EJ2 JavaScript List box control

2 May 20239 minutes to read

The ListBox has support to drag an item or a group of selected items and drop it within the same list box or into another list box.

The elements can be customized on drag and drop by using the following events,

Events Description
dragStart Triggers when the selected element is being dragged.
drag Triggers when the selected element is being dragged.
drop Triggers when the selected element is being dropped.

Single listbox

To drag and drop an item or group of item within the list box can be achieved by setting allowDragAndDrop property as true.

The following sample illustrates how to drag and drop an item within the same list box by enabling allowDragAndDrop property.

var groupA = [
    { "Name": "Australia", "Code": "AU" },
    { "Name": "Bermuda", "Code": "BM" },
    { "Name": "Canada", "Code": "CA" },
    { "Name": "Cameroon", "Code": "CM" },
    { "Name": "Denmark", "Code": "DK" },
    { "Name": "France", "Code": "FR" },
    { "Name": "Finland", "Code": "FI" },
    { "Name": "Germany", "Code": "DE" },
    { "Name": "Hong Kong", "Code": "HK" }
];

var listObj = new ej.dropdowns.ListBox({

    // Set the groupa data to the data source.
    dataSource: groupA,
    // Set allowDragAndDrop as `true`.
    allowDragAndDrop: true,

    // Map the appropriate columns to fields property.
    fields: { text: 'Name' }
});

listObj.appendTo('#listbox');
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 ListBox</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-buttons/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/23.1.36/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="margin:0 auto; width:250px;">
        <input id="listbox">
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

Multiple listbox

To drag and drop an item or group of item between two list boxes can be achieved by setting allowDragAndDrop property as true and scope property should be set to both the list boxes.

In the following sample, the allowDragAndDrop property is set as true and scope is set as combined-list to enable drop and drop in both list boxes.

var groupA = [
    { "Name": "Australia", "Code": "AU" },
    { "Name": "Bermuda", "Code": "BM" },
    { "Name": "Canada", "Code": "CA" },
    { "Name": "Cameroon", "Code": "CM" },
    { "Name": "Denmark", "Code": "DK" },
    { "Name": "France", "Code": "FR" },
    { "Name": "Finland", "Code": "FI" },
    { "Name": "Germany", "Code": "DE" },
    { "Name": "Hong Kong", "Code": "HK" }
];

var groupB = [
    { "Name": "India", "Code": "IN" },
    { "Name": "Italy", "Code": "IT" },
    { "Name": "Japan", "Code": "JP" },
    { "Name": "Mexico", "Code": "MX" },
    { "Name": "Norway", "Code": "NO" },
    { "Name": "Poland", "Code": "PL" },
    { "Name": "Switzerland", "Code": "CH" },
    { "Name": "United Kingdom", "Code": "GB" },
    { "Name": "United States", "Code": "US" }
];

var listObj = new ej.dropdowns.ListBox({

    scope: 'combined-list',

    // Set the groupa data to the data source.
    dataSource: groupA,

    // Set allowDragAndDrop as `true`.
    allowDragAndDrop: true,

    height: '290px',

    // Map the appropriate columns to fields property.
    fields: { text: 'Name' }
});

listObj.appendTo('#listbox1');

listObj = new ej.dropdowns.ListBox({

    scope: 'combined-list',

    // Set the groupa data to the data source.
    dataSource: groupB,

    // Set allowDragAndDrop as `true`.
    allowDragAndDrop: true,

    height: '290px',

    // Map the appropriate columns to fields property.
    fields: { text: 'Name' }
});

listObj.appendTo('#listbox2');
<!DOCTYPE html><html lang="en"><head>
    <title>Essential JS 2 ListBox</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="Typescript UI Controls">
    <meta name="author" content="Syncfusion">
    <link href="styles.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/23.1.36/ej2-buttons/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/23.1.36/dist/ej2.min.js" type="text/javascript"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    
    <div id="container" style="margin:0 auto; width:45%;">
        <div class="drag-drop-wrapper">
            <div class="listbox-control1">
                <h4>Group A</h4>
                <input id="listbox1">
            </div>
            <div class="listbox-control2">
                <h4>Group B</h4>
                <input id="listbox2">
            </div>
        </div>
    </div>


<script>
var ele = document.getElementById('container');
if(ele) {
  ele.style.visibility = "visible";
}   
      </script>
<script src="index.js" type="text/javascript"></script>
</body></html>

See Also