jqwidgets-scripts-custom/demos/Angular/datatable/sortingapi/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, ViewChild } from '@angular/core';

import { jqxDataTableComponent } from 'jqwidgets-scripts/jqwidgets-ts/angular_jqxdatatable';
import { jqxDropDownListComponent } from 'jqwidgets-scripts/jqwidgets-ts/angular_jqxdropdownlist';

import { generatedata } from '../assets/generatedata';



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

export class AppComponent { 
    @ViewChild('myDataTable') myDataTable: jqxDataTableComponent;   
    @ViewChild('columnName') columnName: jqxDropDownListComponent;    
    @ViewChild('sortOrder') sortOrder: jqxDropDownListComponent;    

	getWidth() : any {
		if (document.body.offsetWidth < 850) {
			return '90%';
		}
		
		return 850;
	}

    source: any =
        {
            localdata: generatedata(85, false),
            datatype: "array",
            datafields:
            [
                { name: 'firstname', type: 'string' },
                { name: 'lastname', type: 'string' },
                { name: 'productname', type: 'string' },
                { name: 'quantity', type: 'number' },
                { name: 'price', type: 'number' },
                { name: 'total', type: 'number' }
            ],
            sortcolumn: 'firstname',
            sortdirection: 'asc'
        };

    dataAdapter: any = new jqx.dataAdapter(this.source);

    columns: any[] =
      [
          { text: 'Name', dataField: 'firstname', width: 200 },
          { text: 'Last Name', dataField: 'lastname', width: 200 },
          { text: 'Product', editable: false, dataField: 'productname', width: 180 },
          { text: 'Quantity', dataField: 'quantity', width: 80, align: 'right', cellsalign: 'right' },
          { text: 'Unit Price', dataField: 'price', width: 90, align: 'right', cellsalign: 'right', cellsFormat: 'c2' },
          { text: 'Total', dataField: 'total', width: 100, align: 'right', cellsalign: 'right', cellsFormat: 'c2' }
      ];

    sortBtnOnClick(): void {
        let columnIndex = this.columnName.selectedIndex();
        let sortOrder = this.sortOrder.selectedIndex() == 0 ? 'asc' : 'desc';
        this.myDataTable.sortBy(this.columns[columnIndex].dataField, sortOrder);
    }

    clearBtnOnClick(): void {
        this.myDataTable.sortBy('firstname', null);
    }
}