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Templates in React DropDownList component

22 Jul 2021 / 8 minutes to read

The DropDownList has been provided with several options to customize each list item, group title, selected value, header, and footer elements.

Item template

The content of each list item within the DropDownList 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 DataManager related classes
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

export default class App extends React.Component<{}, {}> {
  // bind the DataManager instance to dataSource property
  private employeeData: DataManager = new DataManager({
    adaptor: new ODataV4Adaptor,
    crossDomain: true,
    url: 'https://services.odata.org/V4/Northwind/Northwind.svc/'
  });
  // 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';


  public render() {
    return (
      // specifies the tag for render the DropDownList component
      <DropDownListComponent id="ddlelement" query={this.query} itemTemplate={this.itemTemplate = this.itemTemplate.bind(this)} dataSource={this.employeeData} sortOrder={this.sortOrder} fields={this.fields} placeholder="Select an employee" />
    );
  }

  // set the value to itemTemplate property
  private itemTemplate(data: any): JSX.Element {
    return (
      <span><span className='name'>{data.FirstName}</span><span className='city'>{data.City}</span></span>
    );
  }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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="width:250px; margin: 20px auto 0;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>

.city {
    right: 15px;
    position: absolute;
}

Value template

The currently selected value that is displayed by default on the DropDownList input element can be customized using the valueTemplate property.

In the following sample, the selected value is displayed as a combined text of both FirstName and City in the DropDownList input, which is separated by a hyphen.

Source

Preview

index.tsx

index.html

styles.css

// import DataManager related classes
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

export default class App extends React.Component<{}, {}> {
    // bind the DataManager instance to dataSource property
    private employeeData: DataManager = new DataManager({
      adaptor: new ODataV4Adaptor,
      crossDomain: true,
        url: 'https://services.odata.org/V4/Northwind/Northwind.svc/'
    });
    // 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

    public render() {
        return (
             // specifies the tag for render the DropDownList component
            <DropDownListComponent id="ddlelement" valueTemplate={this.valueTemplate = this.valueTemplate.bind(this)} query={this.query} itemTemplate={this.itemTemplate = this.itemTemplate.bind(this)} sortOrder={this.sortOrder} dataSource={this.employeeData} fields={this.fields} placeholder="Select an employee" />
        );
    }

    private itemTemplate(data: any): JSX.Element {
      return (
       <span><span className='name'>{data.FirstName}</span><span className ='city'>{data.City}</span></span>
        );
      }
       // set the value to valueTemplate property
     private valueTemplate(data: any): JSX.Element {
      return (
       <span>{data.FirstName} - {data.City}</span>
        );
      }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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="width:250px; margin: 20px auto 0;">
        <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 DataManager related classes
import { DataManager, ODataV4Adaptor, Predicate, Query } from '@syncfusion/ej2-data';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

export default class App extends React.Component<{}, {}> {
  // bind the DataManager instance to dataSource property
  private employeeData: DataManager = new DataManager({
    adaptor: new ODataV4Adaptor,
    crossDomain: true,
    url: 'https://services.odata.org/V4/Northwind/Northwind.svc/'
  });
  // 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';

  public render() {
    return (
      // specifies the tag for render the DropDownList component
      <DropDownListComponent id="ddlelement" query={this.query} groupTemplate={this.groupTemplate = this.groupTemplate.bind(this)} dataSource={this.employeeData} sortOrder={this.sortOrder} fields={this.fields} placeholder="Select an employee" />
    );
  }
  // set the value to groupTemplate
  private groupTemplate(data: any): JSX.Element {
    return (
      <strong>{data.City}</strong>
    );
  }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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>

Header template

The header element is shown statically at the top of the popup list items within the DropDownList, 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 DataManager related classes
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

export default class App extends React.Component<{}, {}> {
    // bind the DataManager instance to dataSource property
    private employeeData: DataManager = new DataManager({
      adaptor: new ODataV4Adaptor,
      crossDomain: true,
        url: 'https://services.odata.org/V4/Northwind/Northwind.svc/'
    });
    // 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';

    public render() {
        return (
             // specifies the tag for render the DropDownList component
            <DropDownListComponent id="ddlelement" query={this.query} headerTemplate={this.headerTemplate = this.headerTemplate.bind(this)} dataSource={this.employeeData} sortOrder={this.sortOrder} itemTemplate={this.itemTemplate = this.itemTemplate.bind(this)}  fields={this.fields} placeholder="Select an employee" />
        );
    }

    // set the value to header template
    private headerTemplate(data: any): JSX.Element {
      return (
       <span className='head'><span className='name'>Name</span><span className='city'>City</span></span>
        );
    }
    // set the value to item template
    private itemTemplate(data: any): JSX.Element {
      return (
       <span className='item' ><span className='name'>{data.FirstName}</span><span className='city'>{data.City}</span></span>
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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="width:250px; margin: 20px auto 0;">
        <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;
}

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

.head .name {
    text-indent: 16px;
 }
 
 .head .city {
    text-indent: 10px;
 }

The DropDownList 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 DropDownList.

Source

Preview

index.tsx

index.html

styles.css

import { DropDownListComponent } 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 array of data
    private sportsData: string[] = ["BasketBall", "Cricket", "Football", "Golf"];


    public render() {
        return (
              // specifies the tag for render the DropDownList component
            <DropDownListComponent id="ddlelement" footerTemplate={this.footerTemplate = this.footerTemplate.bind(this)} dataSource={this.sportsData} placeholder="Select a game" />
        );
    }

    // set the value to footer template
    private footerTemplate(data: any): JSX.Element {
      return (
       <span className='foot'/>
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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: 20px 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 DropDownList 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 { DropDownListComponent } 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 array of data
    private data: { [key: string]: Object }[] = [];


    public render() {
        return (
              // specifies the tag for render the DropDownList component
            <DropDownListComponent id="ddlelement" noRecordsTemplate={this.noRecordsTemplate = this.noRecordsTemplate.bind(this)} dataSource={this.data} placeholder="Select an item" />
        );
    }

    // set the value to noRecords template
    private noRecordsTemplate(data: any): JSX.Element {
      return (
       <span className='norecord'> NO DATA AVAILABLE</span>
        );
    }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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: 20px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>

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 DropDownList displays the notification.

Source

Preview

index.tsx

index.html

styles.css

// import DataManager related classes
import { DataManager, ODataV4Adaptor, Query } from '@syncfusion/ej2-data';
import { DropDownListComponent } from '@syncfusion/ej2-react-dropdowns';
import * as React from 'react';
import * as ReactDOM from 'react-dom';

export default class App extends React.Component<{}, {}> {
  // bind the DataManager instance to dataSource property
  private customerData: DataManager = new DataManager({
    adaptor: new ODataV4Adaptor,
    crossDomain: true,
    url: 'https://services.odata.org/V4/Northwind/Northwind.svcs/'
  });
  // 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' };

  public render() {
    return (
      // specifies the tag for render the DropDownList component
      <DropDownListComponent id="ddlelement" query={this.query} actionFailureTemplate={this.failureTemplate = this.failureTemplate.bind(this)} dataSource={this.customerData} fields={this.fields} placeholder="Select a customer" />
    );
  }
  // set the value to action failure template
  private failureTemplate(data: any): JSX.Element {
    return (
      <span className='action-failure'> Data fetch get fails</span>
    );
  }
}
ReactDOM.render(<App />, document.getElementById('sample'));

<!DOCTYPE html>
<html lang="en">

<head>
    <title>Syncfusion React DropDownList</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: 20px auto 0; width:250px;">
        <div id='loader'>Loading....</div>
    </div>
</body>

</html>

Templates in React DropDownList component

Item template

Value template

Group template

Header template

Footer template

No records template

Action failure template

See Also