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.
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ListBoxComponent } from '@syncfusion/ej2-react-dropdowns';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
function App() {
let 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' },
];
let listboxobj;
function btnClick() {
if (!listboxobj.getDataByValue("Bugatti Veyron Super Sport")) {
listboxobj.addItems([{ text: 'Bugatti Veyron Super Sport', id: 'list-03' }, { text: 'SSC Ultimate Aero', id: 'list-04' }]);
}
}
return (<div>
<ListBoxComponent dataSource={data} ref={(scope) => listboxobj = scope}/>
<ButtonComponent onClick={btnClick}>Add Items</ButtonComponent>
</div>);
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));<!DOCTYPE html>
<html lang="en">
<head>
<title>Syncfusion React ListBox</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="Essential JS 2 for React Components" />
<meta name="author" content="Syncfusion" />
<link href="//cdn.syncfusion.com/ej2/20.4.38/ej2-base/styles/material.css" rel="stylesheet" />
<link href="//cdn.syncfusion.com/ej2/20.4.38/ej2-react-inputs/styles/material.css" rel="stylesheet" />
<link href="//cdn.syncfusion.com/ej2/20.4.38/ej2-react-dropdowns/styles/material.css" rel="stylesheet" />
<link href="//cdn.syncfusion.com/ej2/20.4.38/ej2-react-buttons/styles/material.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
<script src="systemjs.config.js"></script>
<style>
#loader {
color: #008cff;
height: 40px;
left: 45%;
position: absolute;
top: 45%;
width: 30%;
}
</style>
</head>
<body>
<div id='sample' style="margin: 20px auto 0; width:250px;">
<div id='loader'>Loading....</div>
</div>
</body>
</html>import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ListBoxComponent } from '@syncfusion/ej2-react-dropdowns';
import { ButtonComponent } from '@syncfusion/ej2-react-buttons';
function App() {
let data: { [key: string]: Object }[] = [
{ 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' },
];
let listboxobj:ListBoxComponent;
function btnClick(): void {
if(!listboxobj.getDataByValue("Bugatti Veyron Super Sport")){
listboxobj.addItems([{ text: 'Bugatti Veyron Super Sport', id: 'list-03' }, { text: 'SSC Ultimate Aero', id: 'list-04' }]);
}
}
return (
<div>
<ListBoxComponent dataSource={data} ref={(scope) => listboxobj = scope as ListBoxComponent} />
<ButtonComponent onClick={btnClick}>Add Items</ButtonComponent>
</div>
);
}
export default App;
ReactDOM.render(<App />, document.getElementById('sample'));