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Templates

The ComboBox has been provided with several options to customize each list items, group title, header, and footer elements.

Item template

The content of each list item within the ComboBox can be customized with the help of itemTemplate property.

In the following sample, each list item is split into two columns to display relevant data’s.

Source
Preview
index.tsx
index.html
styles.css
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ComboBoxComponent } from '@syncfusion/ej2-react-dropdowns';
//import DataManager related classes
import { Query, DataManager, ODataV4Adaptor } from '@syncfusion/ej2-data';

export default class App extends React.Component<{}, {}> {
    // bind the DataManager instance to dataSource property
    private employeeData: DataManager = new DataManager({
        url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
        adaptor: new ODataV4Adaptor,
        crossDomain: true
    });
    // bind the Query instance to query property
    private query: Query = new Query().from('Employees').select(['FirstName', 'City', 'EmployeeID']).take(6);
    // maps the appropriate column to fields property
    private fields: object = { text: 'FirstName', value: 'EmployeeID' };
    //sort the resulted items
    private sortOrder: string = 'Ascending';
    // set the value to itemTemplate property
    private itemTemplate(data: any): JSX.Element {
      return (
       <span class='item' ><span class='name'>{data.FirstName}</span><span class='city'>{data.City}</span></span>
        );
    }
    render() {
        return (
             // specifies the tag for render the ComboBox component
            <ComboBoxComponent id="comboelement" query={this.query} itemTemplate={this.itemTemplate} dataSource={this.employeeData} fields={this.fields} sortOrder={this.sortOrder} placeholder="Select an employee" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ComboBox</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" />
    <link href="./styles.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: 40px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
.city {
    right: 15px;
    position: absolute;
}

Group template

The group header title under which appropriate sub-items are categorized can also be customize with the help of groupTemplate property. This template is common for both inline and floating group header template.

In the following sample, employees are grouped according to their city.

Source
Preview
index.tsx
index.html
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ComboBoxComponent } from '@syncfusion/ej2-react-dropdowns';
//import DataManager related classes
import { Query, DataManager, Predicate, ODataV4Adaptor } from '@syncfusion/ej2-data';

export default class App extends React.Component<{}, {}> {
    // bind the DataManager instance to dataSource property
    private employeeData: DataManager = new DataManager({
        url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
        adaptor: new ODataV4Adaptor,
        crossDomain: true
    });
    // form  predicate to fetch the grouped data
    private groupPredicate = new Predicate('City', 'equal', 'london').or('City', 'equal', 'seattle');
    // bind the Query instance to query property
    private query: Query = new Query().from('Employees').select(['FirstName', 'City', 'EmployeeID']).take(6).where(this.groupPredicate);
    // maps the appropriate column to fields property
    private fields: object = { text: 'FirstName', value: 'EmployeeID', groupBy: 'City' };
    //sort the resulted items
    private sortOrder: string = 'Ascending';
    //set the value to groupTemplate
    private groupTemplate(data: any): JSX.Element {
       return (
        <strong>{data.City}</strong>
        );
      }

    render() {
        return (
             // specifies the tag for render the ComboBox component
            <ComboBoxComponent id="comboelement" query={this.query} groupTemplate={this.groupTemplate} dataSource={this.employeeData} fields={this.fields} sortOrder={this.sortOrder} placeholder="Select an employee" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ComboBox</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: 40px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>

Header template

The header element is shown statically at the top of the popup list items within the ComboBox, and any custom element can be placed as a header element using the headerTemplate property.

In the following sample, the list items and its headers are designed and displayed as two columns similar to multiple columns of the grid.

Source
Preview
index.tsx
index.html
styles.css
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ComboBoxComponent } from '@syncfusion/ej2-react-dropdowns';
//import DataManager related classes
import { Query, DataManager, ODataV4Adaptor } from '@syncfusion/ej2-data';

export default class App extends React.Component<{}, {}> {
    // bind the DataManager instance to dataSource property
    private employeeData: DataManager = new DataManager({
        url: 'https://services.odata.org/V4/Northwind/Northwind.svc/',
        adaptor: new ODataV4Adaptor,
        crossDomain: true
    });
    // bind the Query instance to query property
    private query: Query = new Query().from('Employees').select(['FirstName', 'City', 'EmployeeID']).take(6);
    // maps the appropriate column to fields property
    private fields: object = { text: 'FirstName', value: 'EmployeeID' };
    //sort the resulted items
    private sortOrder: string = 'Ascending';
    //set the value to header template
    private headerTemplate(data: any): JSX.Element {
      return (
       <span class='head'><span class='name'>Name</span><span class='city'>City</span></span>
        );
      }
    //set the value to item template
    private itemTemplate(data: any): JSX.Element {
      return (
       <span class='item' ><span class='name'>{data.FirstName}</span><span class='city'>{data.City}</span></span>
        );
      }
    render() {
        return (
             // specifies the tag for render the ComboBox component
            <ComboBoxComponent id="comboelement" query={this.query} headerTemplate={this.headerTemplate} dataSource={this.employeeData} sortOrder={this.sortOrder} itemTemplate={this.itemTemplate}  fields={this.fields} placeholder="Select an employee" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ComboBox</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" />
    <link href="./styles.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: 40px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
.head,
.item {
    display: table;
    width: 100%;
    margin: auto;
}

.head {
    height: 40px;
    font-size: 15px;
    font-weight: 600;
    text-indent: 1.067em;
}

.name,
.city {
    display: table-cell;
    vertical-align: middle;
    width: 50%;
}

The ComboBox has options to show a footer element at the bottom of the list items in the popup list. Here, you can place any custom element as a footer element using the footerTemplate property.

In the following sample, footer element displays the total number of list items present in the ComboBox.

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

export default class App extends React.Component<{}, {}> {
    // define the array of data
    private sportsData: string[] = ["BasketBall", "Cricket", "Football", "Golf"];

    //set the value to footer template
     private footerTemplate(data: any): JSX.Element {
      return (
       <span class='foot'></span>
        );
      }
    render() {
        return (
              // specifies the tag for render the ComboBox component
            <ComboBoxComponent id="comboelement" footerTemplate={this.footerTemplate} dataSource={this.sportsData} placeholder="Select a game" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ComboBox</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" />
    <link href="./styles.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: 40px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
.foot {
    text-indent: 1.2em;
    display: block;
    font-size: 15px;
    line-height: 40px;
    border-top: 1px solid #e0e0e0;
}

No records template

The ComboBox is provided with support to custom design the popup list content when no data is found and no matches found on search with the help of noRecordsTemplate property.

In the following sample, popup list content displays the notification of no data available.

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

export default class App extends React.Component<{}, {}> {
    // define the array of data
    private data: string[] = [];

    // set the value to noRecords template
     private noRecordsTemplate(data: any): JSX.Element {
      return (
       <span class='norecord'> NO DATA AVAILABLE</span>
        );
      }
    render() {
        return (
            // specifies the tag for render the ComboBox component
            <ComboBoxComponent id="comboelement" noRecordsTemplate={this.noRecordsTemplate} dataSource={this.data} placeholder="Select an item" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ComboBox</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" />
    <link href="./styles.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: 40px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
.norecord:before {
    content: '\e7c3';
    font-family: 'e-icons';
    font-size: 18px;
    margin-left: -25px;
    margin-top: -3px;
    position: absolute;

}

.action-failure:before{
    content: '\e7c4';
    font-family: 'e-icons';
    font-size: 18px;
    margin-top: -4px;
    position: absolute;
    margin-left: -25px;
}

Action failure template

There is also an option to custom design the popup list content when the data fetch request fails at the remote server. This can be achieved using the actionFailureTemplate property.

In the following sample, when the data fetch request fails, the ComboBox displays the notification.

Source
Preview
index.tsx
index.html
styles.css
import * as React from 'react';
import * as ReactDOM from 'react-dom';
import { ComboBoxComponent } from '@syncfusion/ej2-react-dropdowns';
//import DataManager related classes
import { Query, DataManager, ODataV4Adaptor } from '@syncfusion/ej2-data';

export default class App extends React.Component<{}, {}> {
    // bind the DataManager instance to dataSource property
    private customerData: DataManager = new DataManager({
        url: 'http://services.odata.org/V4/Northwind/Northwind.svcs/',
        adaptor: new ODataV4Adaptor,
        crossDomain: true
    });
    // bind the Query instance to query property
    private query: Query = new Query().from('Customers').select(['ContactName', 'CustomerID']).take(6);
    // maps the appropriate column to fields property
    private fields: object = { text: 'ContactName', value: 'CustomerID' };
    //set the value to action failure template
    private template(data: any): JSX.Element {
      return (
       <span class='action-failure'> Data fetch get fails</span>
        );
      }
    render() {
        return (
            // specifies the tag for render the ComboBox component
            <ComboBoxComponent id="comboelement" actionFailureTemplate={this.template} query={this.query} dataSource={this.customerData} fields={this.fields} placeholder="Select a customer" />
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));
<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React ComboBox</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" />
    <link href="./styles.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: 40px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>
.norecord:before {
    content: '\e7c3';
    font-family: 'e-icons';
    font-size: 18px;
    margin-left: -25px;
    margin-top: -3px;
    position: absolute;

}

.action-failure:before{
    content: '\e7c4';
    font-family: 'e-icons';
    font-size: 18px;
    margin-top: -4px;
    position: absolute;
    margin-left: -25px;
}