syncfusion-react-dropdowns

Install @syncfusion/ej2-react-dropdowns, import the tailwind3 CSS files from ej2-base, ej2-inputs, and ej2-react-dropdowns, then render DropDownListComponent with a dataSource array and placeholder. Both functional and class components are supported.

Bind a DataManager with an ODataV4Adaptor or WebApiAdaptor as the dataSource, enable allowFiltering, and handle the filtering event with args.updateData and a Query. Route external API calls through a trusted server-side proxy rather than calling third-party URLs directly.

AutoComplete suggests matches as the user types into an input. ComboBox combines typed input with a selectable list and allows custom values. DropDownList restricts selection to predefined list items with optional search filtering.

Yes, set enableVirtualization to true and inject the VirtualScroll service with <Inject services={[VirtualScroll]} />. Only visible DOM elements render, and remote data fetches additional pages as the user scrolls.

Handle the change event of the parent DropDownList and reload the child dropdown's dataSource based on the selected value. The references include patterns for multiple cascading dropdowns such as country, state, and city.

Custom filtering handlers must set args.preventDefaultAction = true to stop the built-in filter from running alongside your logic, then call args.updateData with your data and Query. Also verify the fields mapping matches your data columns.