What is the best way to automatically scroll to the bottom of a modal after making a request and

Question

What is the best way to automatically scroll to the bottom of a modal after making a request and

I've been faced with a challenge regarding an online chat widget. My goal is to automatically scroll the widget down to display the latest message when a specific chat is opened. Despite using an async function, I encountered difficulties in achieving this desired functionality.

await axios.post('/', {
  id: id
}).then((response) => {
  this.messages = response.data;
});

console.log($('#SomeName .messages').height()); // The height returns as zero here, however, it should be much more

$('#SomeName').animate({
  scrollTop: $('#SomeName .messages').height()
}, 200);

Upon loading the chat messages, I'm consistently getting a height of 0 for the widget, thus hindering the auto-scroll feature from working as intended. How can I ensure that I wait for the DOM to fully update and obtain the accurate height of the element?

Furthermore, I recognize that the utilization of the await keyword in this scenario may be unnecessary since there's already a .then() callback in place. Despite exploring other alternatives, I haven't found a solution yet.

javascript vue.js

Answer 1

Answer №1

It's recommended to trigger the animation after vue.js has finished updating the DOM.
One way to achieve this is by using Vue.nextTick()

axios
  .post('/', {id: id})
  .then(response => {
    this.messages = response.data;

    // The DOM may not be updated yet, which is why you're getting a height of 0
    Vue.nextTick(() => {
      // Once the DOM is updated, you can trigger your animation here
      $('#SomeName').animate({scrollTop: $('#SomeName .messages').height()}, 200);
    });
  });

NOTE: Keep in mind that the specifics may vary depending on your project structure, but remember to include import Vue from 'vue' if necessary

Answer 2

It's recommended to trigger the animation after vue.js has finished updating the DOM.
One way to achieve this is by using Vue.nextTick()

axios
  .post('/', {id: id})
  .then(response => {
    this.messages = response.data;

    // The DOM may not be updated yet, which is why you're getting a height of 0
    Vue.nextTick(() => {
      // Once the DOM is updated, you can trigger your animation here
      $('#SomeName').animate({scrollTop: $('#SomeName .messages').height()}, 200);
    });
  });

NOTE: Keep in mind that the specifics may vary depending on your project structure, but remember to include import Vue from 'vue' if necessary

What is the best way to automatically scroll to the bottom of a modal after making a request and

Answer №1

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