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src/components-examples/material/table/table-virtual-scroll/table-virtual-scroll-example.ts
45 строк
2 KB
Kristiyan Kostadinov
docs: add virtual scrolling examples
09 дек 2025, 20:37
09 дек 2025, 20:37
b85e5f5
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О чём код?
import {Component} from '@angular/core'; import {MatTableModule} from '@angular/material/table'; import {ScrollingModule} from '@angular/cdk/scrolling'; export interface PeriodicElement { name: string; position: number; weight: number; symbol: string; } const ELEMENT_DATA: PeriodicElement[] = [ {position: 1, name: 'Hydrogen', weight: 1.0079, symbol: 'H'}, {position: 2, name: 'Helium', weight: 4.0026, symbol: 'He'}, {position: 3, name: 'Lithium', weight: 6.941, symbol: 'Li'}, {position: 4, name: 'Beryllium', weight: 9.0122, symbol: 'Be'}, {position: 5, name: 'Boron', weight: 10.811, symbol: 'B'}, {position: 6, name: 'Carbon', weight: 12.0107, symbol: 'C'}, {position: 7, name: 'Nitrogen', weight: 14.0067, symbol: 'N'}, {position: 8, name: 'Oxygen', weight: 15.9994, symbol: 'O'}, {position: 9, name: 'Fluorine', weight: 18.9984, symbol: 'F'}, {position: 10, name: 'Neon', weight: 20.1797, symbol: 'Ne'}, ]; const EXPANDED_ELEMENT_DATA: PeriodicElement[] = []; for (let x = 0; x < 250; x++) { for (const entry of ELEMENT_DATA) { EXPANDED_ELEMENT_DATA.push({...entry, position: entry.position + 10 * x}); } } /** * @title Example of a Material table with virtual scroll enabled. */ @Component({ selector: 'table-virtual-scroll-example', styleUrls: ['table-virtual-scroll-example.css'], templateUrl: 'table-virtual-scroll-example.html', imports: [MatTableModule, ScrollingModule], }) export class TableVirtualScrollExample { displayedColumns: string[] = ['position', 'name', 'weight', 'symbol']; dataSource = EXPANDED_ELEMENT_DATA; trackBy = (index: number, el: PeriodicElement) => el.position; }