小编Vin*_*nno的帖子

它应该很简单，但从昨天开始，我试图在页面上平滑向上滚动。滚动功能有效，但不能平滑滚动。

我试过 : scrollIntoView({behavior: 'smooth'})，但它不起作用。

这是我的 html 组件

        <div *ngIf="displayNoneOnBtn" [hidden]="!displayNoneOnBtn"  id="btnTest" class="shadow d-flex flex-column align-items-center justify-content-center">
            <ng-container *ngIf="!disableBtn">
                <i class="material-icons arrow-up-button" (click)="scrollTopWindow()">keyboard_arrow_up</i>
            </ng-container>
            <ng-container *ngIf="disableBtn">
                <i class="material-icons arrow-down-button" (click)="scrollDown()">keyboard_arrow_down</i>
            </ng-container>
        </div>

还有我的 TS 组件

    import {Component, OnInit, ElementRef} from '@angular/core';
import 'hammerjs';
import { SessionService, UiService } from 'src/app/core/services';

@Component({
    templateUrl: './frontend.component.html',
    styleUrls: ['./frontend.component.scss'],
})

export class FrontendComponent implements OnInit {
    top: number;
    disableBtn = true;
    scrollHeight: number;
    displayNoneOnBtn = true;

    constructor(
        public sessionService: SessionService,
        public uiService: UiService, …