Add items in EJ2 JavaScript List box control

29 Jul 20233 minutes to read

To add an item or multiple items, addItems method can be used. In the following example, the Bugatti Veyron Super Sport and SSC Ultimate Aero items will be added while clicking Add Items button.

index.js
index.html
// define the array of object
var data = [
    { text: 'Hennessey Venom', id: 'list-01' },
    { text: 'Bugatti Chiron', id: 'list-02' },
    { text: 'Koenigsegg CCR', id: 'list-05' },
    { text: 'McLaren F1', id: 'list-06' },
    { text: 'Aston Martin One- 77', id: 'list-07' },
    { text: 'Jaguar XJ220', id: 'list-08' },
    { text: 'McLaren P1', id: 'list-09' },
    { text: 'Ferrari LaFerrari', id: 'list-10' }
];

// initialize ListBox component
var listObj = new ej.dropdowns.ListBox({
    //set the data to dataSource property
    dataSource: data
});
listObj.appendTo('#listbox');

document.getElementById('additem').onclick = function () {
    if (!listObj.getDataByValue('Bugatti Veyron Super Sport')) {
        listObj.addItems([{ text: 'Bugatti Veyron Super Sport', id: 'list-03' }, { text: 'SSC Ultimate Aero', id: 'list-04' }]);
    }
}
<!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/ej2/25.1.35/ej2-base/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-inputs/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-dropdowns/styles/material.css" rel="stylesheet">
    <link href="https://cdn.syncfusion.com/ej2/25.1.35/ej2-buttons/styles/material.css" rel="stylesheet">
    
    
<script src="https://cdn.syncfusion.com/ej2/25.1.35/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;">
        <button id="additem" style="margin: 10px 0" class="e-btn">Add Items</button>
        <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>