In the process of developing a VueJS App with Ionic, there is a Chat feature involved. It is crucial for users to view the latest message first and not the oldest one, so it is necessary for the app to open with the container scrolled to the bottom. Additionally, whenever a new message is received, it should also appear at the bottom.
Key components of my HTML Template:
<ion-content
:scroll-events="true">
<ion-grid>
<ion-row v-for="(message, index) in messages" v-bind:key="index"
:id="(index === messages.length-1)? 'bottomMessage': 'notLastMessage'">
<ion-col
size="9"
:offset="message.fromUsrName === user.name ? 3 : 0 "
:class="
message.fromUsrName === user.name
? 'my-message'
: 'other-message'
"
>
<b>{{ message.fromUsrName }}</b
><br/>
<span>{{ message.text }}</span>
<div class="time">
{{ new Date(message.timestamp).toLocaleString() }}
</div>
</ion-col>
</ion-row>
</ion-grid>
</ion-content>
I attempted the following methods:
const element = document.querySelector('ion-grid')
element.scrollTop = element.scrollHeight;
document.querySelector('ion-content').scrollToBottom(0);
const messageDiv = document.getElementById('bottomMessage')
if (messageDiv) {
messageDiv.scrollIntoView({behavior: "smooth"});
} else {
console.log("no messageDiv");
}
and referenced an answer from: Scroll to bottom of div?
EDIT: I also followed the advice given by @Phil0xFF:
scrollToBottom: function () {
console.log("scrollToBottom");
const element = document.getElementById('content');
if (element) {
element.scrollToBottom(0);
console.log("scrolled");
} else {
console.log("no div");
}
}
The console output displayed:
scrollToBottom Chat.vue:171
scrolled Chat.vue:175
scrollToBottom Chat.vue:171
scrolled Chat.vue:175
EDIT END
Despite all efforts, none of the methods seemed to work as intended and the scrolling action was unresponsive. No error messages were reported, and the presence of the elements queried using document.querySelector and document.getElementById was verified.
Due to asynchronous data loading, I even experimented with a 2-second timeout to ensure data availability before attempting scrolling.
If anyone has insights on additional approaches or can pinpoint any oversight in my implementation, I would greatly appreciate the assistance.
(Pondering over the simplicity of this use case and feeling puzzled about its erratic behavior)