html文件

<div fxFlex fxLayoutAlign="left top" style="display: block">
<!--  <mat-card appearance="raised" style="max-height: 80vh; overflow-y: auto;">--><div><button mat-raised-button (click)="addColumn()"> Add</button><button mat-raised-button (click)="removeColumn()"> Remove </button><button mat-raised-button (click)="shuffle()"> Shuffle </button></div><table mat-table [dataSource]="data" class="mat-elevation-z8"><ng-container [matColumnDef]="column" *ngFor="let column of displayedColumns"><th mat-header-cell *matHeaderCellDef> {{column}} </th><td mat-cell *matCellDef="let element"> {{element[column]}} </td></ng-container><tr mat-header-row *matHeaderRowDef="columnsToDisplay"></tr><tr mat-row *matRowDef="let row; columns: columnsToDisplay;"></tr></table>
</div>

ts文件

import { Component, OnInit } from '@angular/core';
import { UserService } from '@core/http/user.service';
import { AuthUser, User } from '@shared/models/user.model';
import { Authority } from '@shared/models/authority.enum';
import { PageComponent } from '@shared/components/page.component';
import { Store } from '@ngrx/store';
import { AppState } from '@core/core.state';
import { UntypedFormBuilder, UntypedFormGroup, Validators } from '@angular/forms';
import { HasConfirmForm } from '@core/guards/confirm-on-exit.guard';
import { ActionAuthUpdateUserDetails } from '@core/auth/auth.actions';
import { environment as env } from '@env/environment';
import { TranslateService } from '@ngx-translate/core';
import { ActionSettingsChangeLanguage } from '@core/settings/settings.actions';
import { ActivatedRoute } from '@angular/router';
import { isDefinedAndNotNull } from '@core/utils';
import { getCurrentAuthUser } from '@core/auth/auth.selectors';
import { AuthService } from '@core/auth/auth.service';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: 'tb-bz',templateUrl: './bz.component.html',styleUrls: ['./bz.component.scss']
})
export class bzComponent extends PageComponent implements OnInit, HasConfirmForm {authorities = Authority;profile: UntypedFormGroup;user: User;languageList = env.supportedLangs;displayedColumns: string[] = ['name', 'weight', 'symbol', 'position'];columnsToDisplay: string[] = this.displayedColumns.slice();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'},];private readonly authUser: AuthUser;constructor(protected store: Store<AppState>,private route: ActivatedRoute,private userService: UserService,private authService: AuthService,private translate: TranslateService,public fb: UntypedFormBuilder) {super(store);this.authUser = getCurrentAuthUser(this.store);}ngOnInit() {// this.buildProfileForm();// this.userLoaded(this.route.snapshot.data.user);}addColumn() {console.log(this.data)// const randomColumn = Math.floor(Math.random() * this.displayedColumns.length);let arr = this.dataarr.push({position: this.data.length+1, name: 'Neon', weight: 20.1797, symbol: 'Ne'})this.data = arr.slice();}removeColumn() {if (this.data.length) {this.data.pop();}}shuffle() {let currentIndex = this.columnsToDisplay.length;while (0 !== currentIndex) {let randomIndex = Math.floor(Math.random() * currentIndex);currentIndex -= 1;// Swaplet temp = this.columnsToDisplay[currentIndex];this.columnsToDisplay[currentIndex] = this.columnsToDisplay[randomIndex];this.columnsToDisplay[randomIndex] = temp;}}private buildProfileForm() {this.profile = this.fb.group({email: ['', [Validators.required, Validators.email]],firstName: [''],lastName: [''],phone: [''],language: [''],homeDashboardId: [null],homeDashboardHideToolbar: [true]});}save(): void {this.user = {...this.user, ...this.profile.value};if (!this.user.additionalInfo) {this.user.additionalInfo = {};}this.user.additionalInfo.lang = this.profile.get('language').value;this.user.additionalInfo.homeDashboardId = this.profile.get('homeDashboardId').value;this.user.additionalInfo.homeDashboardHideToolbar = this.profile.get('homeDashboardHideToolbar').value;this.userService.saveUser(this.user).subscribe((user) => {this.userLoaded(user);this.store.dispatch(new ActionAuthUpdateUserDetails({ userDetails: {additionalInfo: {...user.additionalInfo},authority: user.authority,createdTime: user.createdTime,tenantId: user.tenantId,customerId: user.customerId,email: user.email,phone: user.phone,firstName: user.firstName,id: user.id,lastName: user.lastName,} }));this.store.dispatch(new ActionSettingsChangeLanguage({ userLang: user.additionalInfo.lang }));this.authService.refreshJwtToken(false);});}private userLoaded(user: User) {this.user = user;this.profile.reset(user);let lang;let homeDashboardId;let homeDashboardHideToolbar = true;if (user.additionalInfo) {if (user.additionalInfo.lang) {lang = user.additionalInfo.lang;}homeDashboardId = user.additionalInfo.homeDashboardId;if (isDefinedAndNotNull(user.additionalInfo.homeDashboardHideToolbar)) {homeDashboardHideToolbar = user.additionalInfo.homeDashboardHideToolbar;}}if (!lang) {lang = this.translate.currentLang;}this.profile.get('language').setValue(lang);this.profile.get('homeDashboardId').setValue(homeDashboardId);this.profile.get('homeDashboardHideToolbar').setValue(homeDashboardHideToolbar);}confirmForm(): UntypedFormGroup {return this.profile;}isSysAdmin(): boolean {return this.authUser.authority === Authority.SYS_ADMIN;}
}