Angular DropDownBox - items

The DropDownBox uses other UI components to render items. Use the contentTemplate to embed a UI component such as the List or the TreeView. In this case, items are displayed in accordance with the configuration and functionality of the embedded UI component.

If you need to update UI component items, reassign the items array as shown in the following example:

dropDownBoxInstance.option('items', newItems);

You can use the dataSource property instead of items. It accepts the DataSource object whose underlying stores include API that allows you to update individual items without reassigning the entire item collection.

The DropDownBox component evaluates the html property's value. This evaluation, however, makes the DropDownBox potentially vulnerable to XSS attacks. To guard against these attacks, encode the HTML markup before you assign it to the html property. Refer to the following help topic for more information: Potentially Vulnerable API - html.

You can use the text property as a safe alternative.

The following types of the specified value are available.

• Assign a string containing the name of the required template.
• Assign a jQuery object of the template's container.
• Assign a DOM Node of the template's container.
• Assign a function that returns the jQuery object or a DOM Node of the template's container.

The following example adds a custom item to the component. Note that Angular and Vue use custom templates instead of the template property. In React, specify the render or component properties.

$(function() {
    $("#dropDownBoxContainer").dxDropDownBox({
        // ...
        items: [
            {
                // ...
                template: '<div>Custom Item</div>'
            }
        ]
    });
});

<dx-drop-down-box ... >
    <dxi-item ... >
        <div *dxTemplate>
            <div>Custom Item</div>
        </div>
    </dxi-item>
</dx-drop-down-box>

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    // ...
}

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AppComponent } from './app.component';

import { DxDropDownBoxModule } from 'devextreme-angular';

@NgModule({
    declarations: [
        AppComponent
    ],
    imports: [
        BrowserModule,
        DxDropDownBoxModule
    ],
    providers: [ ],
    bootstrap: [AppComponent]
})
export class AppModule { }

<template>
    <DxDropDownBox ... >
        <dxItem ... >
            <div>Custom Item</div>
        </dxItem>
    </DxDropDownBox>
</template>

<script>

import DxDropDownBox, {
    DxItem
} from 'devextreme-vue/drop-down-box';

export default {
    components: {
        DxDropDownBox,
        DxItem
    },
    // ...
}
</script>

import React from 'react';

import DropDownBox, {
    Item
} from 'devextreme-react/drop-down-box';

const renderCustomItem = () => {
    return <div>Custom Item</div>;
}

class App extends React.Component {
    render() {
        return (
            <DropDownBox ... >
                <Item ...
                    render={renderCustomItem}
                >
                </Item>
            </DropDownBox>
        );
    }
}
export default App;

See Also

• Custom Templates