How to scroll to bottom in ionic 3 and angular 5

• HTML Template:

html

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        <ion-content #content>

             <!-- Your content here --> 

        </ion-content> 

            <button ion-button (click)="scrollToBottom()">Scroll to Bottom</button>

• Component TypeScript File:

typescript

Copy the below code

import { Component, ViewChild } from '@angular/core';

import { Content } from 'ionic-angular';

@Component({

  selector: 'page-home',

  templateUrl: 'home.html'

})

export class HomePage {

  @ViewChild(Content) content: Content;

  constructor() {}

  scrollToBottom() {

    this.content.scrollToBottom();

  }

}

In the above example:

• We have an <ion-content> element with a template reference variable #content.
• We use @ViewChild(Content) to get a reference to the Content component.
• The scrollToBottom() method is called when the "Scroll to Bottom" button is clicked, which scrolls the content to the bottom.

If you facing the below error

polyfills.js:3 ERROR TypeError: _this.content.scrollToBottom is not a function

The error message TypeError: _this.content.scrollToBottom is not a function suggests that the Content component's scrollToBottom() method might not be available or properly initialized in your Ionic 3 project with Angular 5.

Here are a few troubleshooting steps you can follow to resolve this issue:

• Import Content Component:
• Ensure that you have imported the Content component from ionic-angular in your component file.
  
  
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  import { Content } from 'ionic-angular';

  
  
  
• ViewChild Initialization:
• Make sure you are accessing the Content component correctly using @ViewChild.
  
  
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  @ViewChild(Content) content: Content;

  
  
  
• View Encapsulation:
• Sometimes, the child components are not fully initialized when trying to access them in the ngOnInit() lifecycle hook. You can try accessing the Content component in the ionViewDidEnter() lifecycle hook instead.
  
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  ionViewDidEnter() { this.content.scrollToBottom(); }

  
  
  
• Update Ionic Version:
• Ionic 3 and Angular 5 are quite old versions. It's possible that the scrollToBottom() method might not be available or has been deprecated in these versions. Consider updating to a newer version of Ionic and Angular, which might provide better support and features.
• Alternative Approach:
• As an alternative, you can try using JavaScript's native scrollTop property to scroll to the bottom of the content.
  typescript
  
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• scrollToBottom() {

    const contentElement = this.content.getContentElement();

    contentElement.scrollTo(0, contentElement.scrollHeight);

  }