javascript - Angular Material Table-如何保存数据?
问题描述
我有基本的角材料表。单击按钮时是否有可能保存表中显示的数据(我的意思是保存每一行数据)?如果是,我该怎么做?如何获取每一行数据?我想将每一行数据保存为一个对象并将其推送到一个数组中。
<div class="mat-elevation-z8">
<table mat-table [dataSource]="dataSource">
<!-- Position Column -->
<ng-container matColumnDef="position">
<th mat-header-cell *matHeaderCellDef> No. </th>
<td mat-cell *matCellDef="let element"> {{element.position}} </td>
</ng-container>
<!-- Name Column -->
<ng-container matColumnDef="name">
<th mat-header-cell *matHeaderCellDef> Name </th>
<td mat-cell *matCellDef="let element"> {{element.name}} </td>
</ng-container>
<!-- Weight Column -->
<ng-container matColumnDef="weight">
<th mat-header-cell *matHeaderCellDef> Weight </th>
<td mat-cell *matCellDef="let element"> {{element.weight}} </td>
</ng-container>
<!-- Symbol Column -->
<ng-container matColumnDef="symbol">
<th mat-header-cell *matHeaderCellDef> Symbol </th>
<td mat-cell *matCellDef="let element"> {{element.symbol}} </td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>
<mat-paginator [pageSizeOptions]="[5, 10, 20]"
showFirstLastButtons
aria-label="Select page of periodic elements">
</mat-paginator>
</div>
<button mat-raised-button color="warn" (click)="saveData()">Warn</button>
解决方案
代码解决方案:https : //stackblitz.com/edit/angular-wn7vwb-su3tun ?file=app/table-basic-example.ts
这可能会帮助你
html
<table mat-table [dataSource]="dataSource" class="mat-elevation-z8">
<!-- Position Column -->
<ng-container matColumnDef="position">
<th mat-header-cell *matHeaderCellDef>No.</th>
<td mat-cell *matCellDef="let element">{{element.position}}</td>
</ng-container>
<!-- Name Column -->
<ng-container matColumnDef="name">
<th mat-header-cell *matHeaderCellDef>Name</th>
<td mat-cell *matCellDef="let element">{{element.name}}</td>
</ng-container>
<!-- Weight Column -->
<ng-container matColumnDef="weight">
<th mat-header-cell *matHeaderCellDef>Weight</th>
<td mat-cell *matCellDef="let element">{{element.weight}}</td>
</ng-container>
<!-- Symbol Column -->
<ng-container matColumnDef="symbol">
<th mat-header-cell *matHeaderCellDef>Symbol</th>
<td mat-cell *matCellDef="let element">{{element.symbol}}</td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>
<button mat-raised-button color="warn" (click)="saveData()">Warn</button>
ts
import { Component } from '@angular/core';
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' },
];
@Component({
selector: 'table-basic-example',
styleUrls: ['table-basic-example.css'],
templateUrl: 'table-basic-example.html',
})
export class TableBasicExample {
displayedColumns = ['position', 'name', 'weight', 'symbol'];
dataSource = ELEMENT_DATA;
saveData() {
console.log(this.dataSource);
}
}
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