我正在尝试在 ionic 3 上创建一个 scrollTop 按钮,但它不起作用,有人可以提示我做错了什么吗?我如何继续在 fab ion 中添加 scrollTop
这是我的代码home.ts
import { Component, ViewChild } from '@angular/core';
import { IonicPage, NavController, NavParams, ToastController, Content }
from 'ionic-angular';
import { AngularFireAuth } from "angularfire2/auth";
import { MenuController } from "ionic-angular";
import { PrediosPage } from '../predios/predios';
@IonicPage()
@Component({
selector: 'page-home',
templateUrl: 'home.html',
})
export class HomePage {
@ViewChild('pageTop') pageTop: Content;
public pageScroller(){
this.pageTop.scrollToTop();
}
searchQuery: string = '';
items: any[];
constructor(private afAuth: AngularFireAuth, private toast:
ToastController,
public navCtrl: NavController, public navParams: NavParams, public menu:
MenuController) {
this.initializeItems();
}
这是我的home.html
<ion-content #pageTop>
<div paddign>
<ion-searchbar (ionInput)="getItems($event)" placeholder="Pesquisar">
</ion-searchbar>
<ion-list>
<ion-item *ngFor="let item of items" (click)="itemTapped($event, item)">
<ion-thumbnail item-left>
<img [src]="item.imagem">
</ion-thumbnail>
<h2 style="color:#886AEA">{{ item?.nome }}</h2>
<p>Rua: {{ item?.rua }} - {{ item?.numero }}</p>
</ion-item>
</ion-list>
</div>
<ion-fab right bottom>
<button ion-fab color="darkroyal" (click)="pageTop"><ion-icon name="ios-arrow-up"></ion-icon></button>
</ion-fab>
最佳答案
您必须更改以下行:
@ViewChild(Content) pageTop: Content;
而且,您必须将 html 按钮上的 click
函数名称更改为您创建的函数名称,以使页面滚动到顶部:
<ion-fab right bottom>
<button ion-fab color="darkroyal" (click)="pageScroller()">
<ion-icon name="ios-arrow-up"></ion-icon></button>
</ion-fab>
关于javascript - 如何在 ionic 3 上创建一个 scrollTop 按钮,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/51976524/