Angular Range Selector - Filter

The RangeSelector component allows you to handle changes of the currently selected range. For this purpose, the callback function is specified in the onValueChanged property. This demo illustrates how to use the newly selected range for filtering data.

Backend API

<div id="range-selector-demo"> <dx-range-selector id="range-selector" title="Filter Employee List by Birth Year" [dataSource]="employees" dataSourceField="BirthYear" (onValueChanged)="onValueChanged($event)" > <dxo-range-selector-margin [top]="20"></dxo-range-selector-margin> <dxo-range-selector-scale [tickInterval]="1" [minorTickInterval]="1"> <dxo-range-selector-label format="decimal"></dxo-range-selector-label> </dxo-range-selector-scale> <dxo-range-selector-behavior valueChangeMode="onHandleMove" ></dxo-range-selector-behavior> </dx-range-selector> <h2>Selected Employees</h2> <dx-data-grid id="gridContainer" [dataSource]="selectedEmployees" [columns]="['FirstName', 'LastName', 'BirthYear', 'City', 'Title']" [showBorders]="true" [columnAutoWidth]="true" > </dx-data-grid> </div>

import { bootstrapApplication } from '@angular/platform-browser'; import { Component, enableProdMode, provideZoneChangeDetection } from '@angular/core'; import { DxDataGridModule } from 'devextreme-angular'; import { DxRangeSelectorModule, DxRangeSelectorTypes } from 'devextreme-angular/ui/range-selector'; import { Service, Employee } from './app.service'; if (!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', providers: [Service], templateUrl: './app.component.html', styleUrls: ['./app.component.css'], imports: [ DxRangeSelectorModule, DxDataGridModule, ], }) export class AppComponent { employees: Employee[]; selectedEmployees: Employee[]; constructor(service: Service) { this.employees = service.getEmployees(); this.selectedEmployees = this.employees; } onValueChanged(e: DxRangeSelectorTypes.ValueChangedEvent) { this.selectedEmployees = this.employees.map( (item) => ( (item.BirthYear >= (e.value[0] as number) && item.BirthYear <= (e.value[1] as number)) ? item : undefined ), ).filter(Boolean); } } bootstrapApplication(AppComponent, { providers: [ provideZoneChangeDetection({ eventCoalescing: true, runCoalescing: true }), ], });

::ng-deep #range-selector { height: 140px; } ::ng-deep #range-selector-demo h2 { font-size: 20px; margin: 38px 0 10px; text-align: center; }

import { Injectable } from '@angular/core'; export class Employee { LastName: string; FirstName: string; BirthYear: number; City: string; Title: string; } const employees: Employee[] = [ { LastName: 'Davolio', FirstName: 'Nancy', BirthYear: 1948, City: 'Seattle', Title: 'Sales Representative', }, { LastName: 'Fuller', FirstName: 'Andrew', BirthYear: 1952, City: 'Tacoma', Title: 'Vice President, Sales', }, { LastName: 'Leverling', FirstName: 'Janet', BirthYear: 1963, City: 'Kirkland', Title: 'Sales Representative', }, { LastName: 'Peacock', FirstName: 'Margaret', BirthYear: 1937, City: 'Redmond', Title: 'Sales Representative', }, { LastName: 'Buchanan', FirstName: 'Steven', BirthYear: 1955, City: 'London', Title: 'Sales Manager', }, { LastName: 'Suyama', FirstName: 'Michael', BirthYear: 1963, City: 'London', Title: 'Sales Representative', }, { LastName: 'King', FirstName: 'Robert', BirthYear: 1960, City: 'London', Title: 'Sales Representative', }, { LastName: 'Callahan', FirstName: 'Laura', BirthYear: 1958, City: 'Seattle', Title: 'Inside Sales Coordinator', }, { LastName: 'Dodsworth', FirstName: 'Anne', BirthYear: 1966, City: 'London', Title: 'Sales Representative', }, ]; @Injectable() export class Service { getEmployees(): Employee[] { return employees; } }

<!DOCTYPE html> <html lang="en"> <head> <title>DevExtreme Demo</title> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" /> <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/26.1.5/css/dx.light.css" /> </head> <body class="dx-viewport"> <div class="demo-container"> <demo-app>Loading...</demo-app> </div> <script src="https://cdn.jsdelivr.net/npm/zone.js@0.16.2/bundles/zone.umd.js"></script> <script src="./bundle.js" type="module"></script> </body> </html>