ionic 2 + angular 2 : auto scroll to bottom of list / page / chat

Question

I\'m trying to code a page with two segments \"chat\" and \"content\". I want that one \"chat\" segment the page auto-scroll to the bottom with no effect. The chat is a &l

Answer 1

Here's how I did it:

chatPage.html

The important bit in chatPage.html is #content on . I'll use the #content identifier to obtain a reference to in my chatPage.js using the ViewChild.

Now for the actual scrolling logic:

chatPage.js

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

@Component({
  templateUrl: 'build/pages/chatPage/chatPage.html',
  queries: {
    content: new ViewChild('content')
  }
})
export class ChatPage {
  constructor() { 

  }

  //scrolls to bottom whenever the page has loaded
  ionViewDidEnter(){
    this.content.scrollToBottom(300);//300ms animation speed
  }
}

Also, whenever my chatPage needs to show another chat message in the list (either a new message is received, or a new message is sent), I'm using the below code to scroll to the new bottom:

setTimeout(() => {
  this.content.scrollToBottom(300);//300ms animation speed
});

---

Update for Typescript

Back when I gave this answer I was working with JavaScript version of Ionic 2 project. Over time I switched to TypeScript but I forgot to update the answer, so, here's a small update for chatPage.js(ts):

chatPage.ts

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

@Component({
  templateUrl: 'chatPage.html'
})
export class ChatPage {
  @ViewChild('content') content:any;

  constructor() { }

  //scrolls to bottom whenever the page has loaded
  ionViewDidEnter(){
    this.content.scrollToBottom(300);//300ms animation speed
  }
}