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Grouping

The AutoComplete supports wrapping nested elements into a group based on different categories. The category of each list item can be mapped through the groupBy field in the data table. The group header is displayed both as inline and fixed headers. The fixed group header content is updated dynamically on scrolling the popup list with its category value.

In below sample, vegetables are grouped based on its category using groupBy field.

Source
Preview
index.tsx
index.html
import { AutoCompleteComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

export default class App extends React.Component<{}, {}> {
    // define the data with category
    private vegetableData: { [key: string]: Object }[] = [
        { Vegetable: 'Cabbage', Category: 'Leafy and Salad', Id: 'item1' },
        { Vegetable: 'Spinach', Category: 'Leafy and Salad', Id: 'item2' },
        { Vegetable: 'Wheat grass', Category: 'Leafy and Salad', Id: 'item3' },
        { Vegetable: 'Yarrow', Category: 'Leafy and Salad', Id: 'item4' },
        { Vegetable: 'Pumpkins', Category: 'Leafy and Salad', Id: 'item5' },
        { Vegetable: 'Chickpea', Category: 'Beans', Id: 'item6' },
        { Vegetable: 'Green bean', Category: 'Beans', Id: 'item7' },
        { Vegetable: 'Horse gram', Category: 'Beans', Id: 'item8' }
    ];

    // map the groupBy field with Category column
    private fields: object = { groupBy: 'Category', value: 'Vegetable' };

    public render() {
        return (
             // specifies the tag for render the AutoComplete component
            <AutoCompleteComponent id="atcelement" fields={this.fields} dataSource={this.vegetableData} placeholder="Select a vegetable" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React AutoComplete</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/ej2-base/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-inputs/styles/material.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/ej2-react-dropdowns/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>

Customization

The grouping header is also provided with customization option. This allows custom designing using the groupTemplate property for both inline and fixed headers as referred here

groupTemplate property for both inline and fixed header.

See Also