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Overview

The Combo Box is a textbox component that allows the user to type a value or choose an option from the list of predefined options. This has several out of box features such as data binding, filtering, grouping, UI customization, accessibility, custom value, and more.


Data binding in combobox

Data binding

You can bind data from a variety of data sources in the array of primitive data, JSON data collections, or remote data source using different kinds of adaptors such as OData, OData V4, URL, JSON, and Web API. This uses Essential JS 2’s data manager to manage data and also has customization option for data request and processing.


Custom value

Allows the user to add a new value that is not present in the predefined list.

Custom value support in combobox


Filtering

Built-in filtering support with a rich set of filtering configurations is available to match all your application needs.

Filtertype in combobox

Filter type

Provides support to filter data based on starts with, ends with, and contains.

Custom filtering in combobox

Custom filtering

You can customize the filter query or use your own filter libraries to set filtered data.

Diacritic sensitive filtering in combobox

Diacritic sensitivity

Combo Box has diacritic character sensitivity. This behavior can be turned on/off.

Ignore filter text casing in combobox

Ignore filter text casing

You can filter data with or without considering the casing for typed characters.

Minimum filter search characters in combobox

Minimum search characters

Provides option to set the number of characters required to filter.


UI Customization

Control the appearance of each item that is displayed in the pop-up list using templating.

Item template in combobox

Item template

Define custom appearance of each list item using item template.

header template in combobox pop-up list

Header template

Design own header for the pop-up list using header template.

Footer template in combobox pop-up list

Designs its own custom footer for the pop-up list using footer template.

Icons in combobox pop-up list

Icons

Adds icons to each list item.

No record template in combobox pop-up list

Empty record

Configures custom look if there is no suggestion to display.


AutoFill

The Combo Box component has autofill option. This completes the word that the user types from the suggestion text. The end user can search for the items easily.

AutoFill in combobox


Grouping in combobox

Grouping

Groups the suggestions based on different categories with individual header.


Cascading

Provides an option to create cascading Combo Box, which helps the user populate data to the next level Combo Box based on the selected value of the parent Combo Box.


Form Validation in combobox

Form validation

Seamlessly supports HTML forms, template-driven forms (Angular), and reactive forms.


Pop-up dimension

The width and height of the pop-up list are adjustable.

Pop-up dimension adjustment in combobox


Soring in combobox

Sortable list items

You can display the items in the ascending or descending order in a pop-up.


Floating label

Developer can control whether the placeholder should float or not.

Floting label in combobox


Responsiveness

Provides responsive mode that gives adaptive redesigned UI appearance for mobile devices and recognizes touch gestures.


Accessibility

  • Fully supports WAI-ARIA accessibility that makes list view accessible to on-screen readers and assistive devices.

  • Follows WAI-ARIA best practices for implementing keyboard interaction.

  • Designed the UI element visuals such as foreground color, background color, line spacing, text, and images based on WCAG 2.0 standard.

  • Supports right to left (RTL) direction for users working in right-to-left languages like Hebrew, Arabic, or Persian.

Developer friendly APIs

Developers can customize all UI elements and control their behaviors according to the end user’s requirement using its rich set of client-side APIs.


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