Can the placement of Vue.js methods impact the overall performance and size of the application?

I am currently working with a list component and a looping item component structured as follows:

RoomList.vue

<template>
  <ul id="TheRoomList">
    <button
      id="TheCreateRoomButton"
      @click="createRoom()"
      :disabled="createRoomIsDisabled"
    >
      <span v-if="createRoomIsDisabled">Loading...</span>
      <span v-else>Create Room</span>
    </button>
    <div v-if="rooms.length === 0">Loading...</div>
    <div v-else>
      <room-item v-for="room in rooms" :key="room.id" :room="room" />
    </div>
  </ul>
</template>

<script>
import RoomItem from "./RoomItem.vue";

export default {
  components: { RoomItem },

  data: () => ({
    createRoomIsDisabled: false,
    rooms: [],
  }),

  methods: {
    async createRoom() {
      this.createRoomIsDisabled = true;

      const newRoom = await this.$db.collection("rooms").add({
        creator: this.$auth.currentUser.email,
        created_at: new Date(),
      });

      this.$router.push(newRoom.id);
    },
  },

  created() {
    this.$bind(
      "rooms",
      this.$db.collection("rooms").orderBy("created_at", "desc")
    );
  },
};
</script>

RoomItem.vue

<template>
  <li id="Room" :data-id="room.id">
    <a :href="room.id" target="_blank" style="font-family: monospace">{{
      room.id.toUpperCase()
    }}</a>
    <button v-if="room.creator === $user.email" @click="deleteRoom()">
      Delete
    </button>
  </li>
</template>

<script>
export default {
  props: {
    room: Object,
  },

  methods: {
    deleteRoom() {
      this.$db.collection("rooms").doc(this.room.id).delete();
    },
  },
};
</script>

What are the implications of placing methods inside a looping component? Could it impact performance or app size?

If I choose to emit events to the parent component instead, it may result in a bloated parent component with methods. In that case, what would be the best approach?

Answer №1

No need to worry! Each component is compiled only once, regardless of the number of methods inside a child component. Performance and bundle size are not significantly affected by this. Your example is actually quite small.

Performance may be impacted by computed properties, depending on your data structure and how often it gets updated.

If you're dealing with a large loop (1000-3000+ components in the list), consider using:

Virtual Scroll List

Check out an example with infinite scroll here

Twitter uses this technique to render very long lists with complex components while keeping performance impact minimal.

Answer №2

No, it does not negatively affect performance in any way.
To see all the available setters (related to the methods) on a specific component, simply click on it in your dev tools and select with $vm0.

https://i.sstatic.net/EIfQz.png

Scroll down in the selected object to view all the getters/setters. https://i.sstatic.net/FMEUt.png

Having these getters/setters is perfectly acceptable as detailed in this excellent answer.

PS: I also endorse the courses recommended by Prashant.

Lastly, when using @click="deleteRoom()", consider using @click="deleteRoom" instead. Calling deleteRoom() directly executes the callback immediately rather than waiting for it to be triggered only.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

"Adding properties to objects in a map: a step-by-step guide

During my attempt to add a property within a map loop, I noticed that the update appeared to occur on a duplicate rather than the original object. MY_ARRAY.map(function(d){ d.size = DO_SOMETHING }); ...

It appears that the fetch operation does not wait as expected

Having some trouble with a caching system in my code where I'm trying to load the same template quickly. Even though I've tried implementing a basic caching mechanism to only fetch the template if it hasn't been loaded before, I'm strug ...

Utilizing Mongoose aggregation for counting and grouping operations

I am trying to search for records that correspond to a specific URL but want to return a customized object instead. Here is the model I am working with: const ReactionSchema = mongoose.Schema({ url: { type: String, required: true }, emoji: ...

Executing the event handler only once

In my React project, I have a button that toggles a boolean state. However, I realized that the button can both set and unset the state due to its toggle functionality. I only want the state to be changed once. Is there a different function I can use ins ...

What could be causing my JQuery code to fail after loading data via ajax?

My tree view is set up using the following jQuery code: $(".treeView").on("click", ".CollOpen, .CollClosed", function () { $(this).toggleClass("CollOpen CollClosed").nextAll('ul').first().toggle(); }); Initially, this code works perfectly. ...

The Instagram API seems to be experiencing some technical difficulties

My expertise lies primarily in HTML/CSS, with limited knowledge of using APIs and JavaScript. I have been assigned the task of utilizing an API to retrieve Instagram pictures posted by users with a specific hashtag. Here is the demo shared via JSFiddle: ...

Display the information in the second dropdown menu once the selection has been made in the first dropdown menu

I've successfully implemented a feature where selecting an option from the first drop-down list populates the second drop-down list accordingly. The HTML code snippet is as follows: <select size="1" id="BodyPart" title="" name="BodyPart"> ...

Node.js, PHP, and the Express framework

I have a project where I need to develop a to-do list and a form that allows users to upload png files using Node.js. Currently, I am using the following packages: { "name": "todo", "version": "0.0.1", "private": true, "dependencies": { "ejs": ...

Graph only displays data after button is clicked

I have been working on customizing this jsfiddle to display database data. Check it out here: http://jsfiddle.net/jlbriggs/7ntyzo6u/ Using JSON, I am fetching data from my database and editing chart1 to display the database data: var chart, chartOption ...

What is the best way to invoke a method repeatedly within a loop in Vue.js

I have successfully called a method within a v-for loop, however I am encountering the following warning: [Vue warn]: You may have an infinite update loop in a component render function. How can I resolve this issue? Below is my code snippet: <tr v- ...

Table header with distinct models and multiple selection inputs

When fetching data from the backend, it follows this format: [ [ [ "123", "21/11/2013", "Data", "Data" ], [ "234", "22/11/2013", "Data", "Data" ], [ "345", "12/09/2018", "Data", "Data" ], ], [ [ "123", "D ...

A guide on retrieving a JSON static file that has been imported using Webpack

I have a JSON static file named someFile.json within my project directory. This JSON file contains a stringified array of objects: [{...},{...},etc] To import it using Webpack (version 4.41.2), I use the following line in my App.js file: import '.. ...

Angular renders HTML elements

Greetings! I am currently experimenting with using AngularJS for the frontend and Wordpress as the backend of my project. To load content from Wordpress into Angular, I am utilizing a JSON wordpress plugin along with making $http requests. The content th ...

The computed property in Vue JS is providing an unexpected output

I need assistance with a task in Vue JS that I'm struggling with. I can't seem to figure out what's causing the issue in this code. The task involves creating a dynamic table with 5 columns, each with a background color of red, blue, yellow ...

Vue Eslint Extension

My current project utilizes the eslint vue plugin with specific rules set in place. "rules": { "vue/html-closing-bracket-newline": ["error", { "singleline": "never", "multiline": "always" }], "vue/html-closi ...

Incrementing and decrementing a textbox value by one using onClick

I'm looking for help with a JavaScript solution without using jQuery or any plugins, specifically for Cordova/PhoneGap. I am new to JavaScript and learning as I go, so please bear with me. My goal is to create a functionality where there is a textbox ...

When utilizing useEffect in Next.js, an error may occur stating that the window is

It seems like there is a challenge with executing script code server side in next.js 13 when it needs to be executed client side. Currently, I am trying to implement the bulma calendar found at When importing the required library: import PasswordStrengthB ...

Angular Starter Kit

When starting with Angular.js, there are various boilerplate kits available such as angular-seed, some incorporating requirejs and more. However, many of the options I've come across seem to be outdated. As a newcomer to Angular, I'm wondering if ...

Issues with the functionality of Angular JS search filter

Currently working on a project using Cordova Ionic with AngularJS to develop an app. In this app, I am implementing a search filter for "apps". Each "app" has unique identifiers such as an id, name, and other attributes. The issue I am facing is that the ...

Assign a value to a hash object based on a specific location stored within an array

I'm struggling to figure out how to retrieve the original JSON data when its structure is variable. var jsonData = { "parent": { "child": "foo" } }; fu ...