jqwidgets-scripts-custom/demos/Angular/textarea/autocomplete/src/app/app.component.ts

jQWidgets is an advanced jQuery, Angular 7, Vue, React, ASP .NET MVC, Custom Elements and HTML5 UI framework.

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

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html'
})

export class AppComponent  {
    source = (query, response) => {
        let dataAdapter = new jqx.dataAdapter({
            datatype: 'jsonp',
            datafields:
            [
                { name: 'countryName' },
                { name: 'name' },
                { name: 'population', type: 'float' },
                { name: 'continentCode' },
                { name: 'adminName1' }
            ],
            url: 'https://secure.geonames.org/searchJSON',
            data:
            {
                featureClass: 'P',
                style: 'full',
                maxRows: 12,
                username: 'jqwidgets'
            }
        },
        {
            autoBind: true,
            formatData: (data: any): any => {
                data.name_startsWith = query;
                return data;
            },
            loadComplete: (data: any): any => {
                if (data.geonames.length > 0) {
                    response(data.geonames.map(item =>
                    {
                        return {
                            label: item.name + (item.adminName1 ? ', ' + item.adminName1 : '') + ', ' + item.countryName,
                            value: item.name
                        }
                    }));                  
                }
            }
        });
    };
}