Extracting values from an event in Vue.js: A step-by-step guide

When working with Vue.js, I use the following code to fire an event:

this.$emit("change", this.data);

The parent component then receives this data, which is in the form of an object containing values and an observer. It looks like this:

{
  data: ['Joe Doe'],
  __ob__: Observer
}

I want to extract only the values from the object and avoid including the __ob__ part. How can I achieve this?

Answer №1

When dealing with an event as an entity containing a data key, the information inside can be accessed using event.data.

The __ob__ property is used by Vue reactivity and is not displayed when accessing console output:

In scenarios where non-enumerable keys are involved, they may be overlooked in certain methods of accessing object keys such as for..in, Object.key, or JSON.stringify. This should not affect the functionality of reactive objects unless the __ob__ property is directly interacted with, which should only occur for valid reasons.

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

jQuery load() issue

$('form.comment_form').submit(function(e) { e.preventDefault(); var $form = $(this); $.ajax({ url : 'inc/process-form.php', type: 'POST', cache: true, data:({ comment ...

Having trouble removing a DOM element with jQuery?

Hey there, I need your help with a jQuery issue I'm facing. I am currently working on cloning a div element that contains a span with a click event attached to it. The purpose of the click event is to remove the newly cloned section from the DOM. Whil ...

Adjust the location.hash and then navigate using the Back button - Internet Explorer displays unique behavior compared to other web browsers

When updating `location.hash`, all browsers behave correctly by only changing the URL without refreshing the page. However, pressing the Back button in Internet Explorer and other browsers results in different behaviors. IE fails to update the history wit ...

What is the method for modifying the input element within a TextField component from MUI?

I have TextField elements in my application that appear to be too large. Upon inspection, I noticed that the input element within them has default padding that is too big.https://i.stack.imgur.com/C13hj.png My query is regarding how to adjust the styling ...

Retrieve the data from the file input field

I am attempting to dynamically change the value of an input type text based on the input type file selection. Despite my efforts with the code below, I have been unable to find a solution to this issue. HTML: <input type="text" name="imagem" class="fi ...

Is it possible for a JSON array to consist of objects with varying key/value pairs?

Is it possible for a JSON array to contain objects with different key/value pairs? The example provided in this tutorial shows objects within the JSON array having the same key/value pair: { "example": [ { "firstName": " ...

Using jQuery's $.ajax() function to make an asynchronous request, and then passing the

I'm currently utilizing the jQuery $.ajax() function within a parent function that passes values into the ajax call. I am looking to have a custom callback function that can access the data parameter returned from the success function of the ajax call ...

Apply jQuery styling to new select box on page in order to maintain consistent styling throughout

I've encountered an issue with my jQuery select box styling. It appears to work perfectly on the initial page load, but when new content containing a select box is dynamically loaded onto the page, the styling doesn't get applied to it. Can anyo ...

Exploring how to alter state in a child component using a function within the parent component in React

class ParentComponent extends Component { state = { isDialogOpen: false, setStyle: false } handleClose = () => { this.setState({ isDialogOpen: false, setStyle: false }) } handleOpen = () => { this.setState({ isDialogOpen: true ...

AngularJS - smooth scrolling with $anchorScroll duration

While going through the AngularJS documentation, I have not been able to determine whether $anchorScroll has a duration or easing option for smoother scrolling to elements. The documentation only shows: $location.hash('bottom'); // call $ancho ...

How come attempting to read a nonexistent document from Firestore results in an uncaught promise?

I've been struggling to read and display data from Firestore, but I keep seeing error messages in the console. Encountered (in promise) a TypeError: Unable to read properties of undefined (reading 'ex') Encountered (in promise) a TypeError ...

When the "x" close icon is clicked, the arrow should toggle back to 0 degrees

I've been tackling the challenge of creating an accordion and I'm almost there. However, I'm facing an issue where the arrow doesn't return to its original position after clicking the close "x" icon. The toggle works fine but the arrow ...

Verifying user presence in Vue when making edits

Currently, I'm attempting to validate user existence in Vue using Vuetify inputs when trying to edit a User. The goal is to prevent an error if the username already exists, unless it is the old username of the user being edited without any changes mad ...

in JavaScript arrays, the identifier follows the numeric value right away

Can anyone assist me with assigning a PHP array of image filenames to a JavaScript array? I have made some progress, here's my code: <script src="jq.js"></script> <?php $dir = 'images'; $images = scandir($dir); $true_images ...

Exploring the reach of scope in a directive

Managing a controller responsible for fetching event JSON data, updating the DOM with data if available, and displaying an error message if no data is found: //Controller.js myApp.controller('EventsCtrl', ['$scope','API', fun ...

What is the best way to submit form data along with an image using Angular?

Recently, I built an application where users can submit form data along with an uploaded image. Since I am new to Angular, I am facing some challenges in merging the user-submitted data model and the image upload using the FormData method. Can anyone guide ...

Is there a way to temporarily toggle classes with jQuery?

Incorporating ZeroClipboard, I have implemented the following code to alter the text and class of my 'copy to clipboard button' by modifying the innerHTML. Upon clicking, this triggers a smooth class transition animation. client.on( "complete", ...

Struggling to set up Tailwind in NuxtJS configuration

Using the "@nuxtjs/tailwindcss": "^2.0.0" for my Nuxt App has been quite helpful. Upon installation, it generated a tailwind.config.js file. I made some modifications to the code below: module.exports = { theme: {}, variants: {}, plug ...

What is the process for writing code in a recursive manner?

I'm in the process of converting these code snippets into smaller ones using recursion. However, I've hit a roadblock while trying to implement a for loop. The dictionary I am working with is: var structure = []; and it has the following structu ...

"Error: Unable to access the property '$emit' of an undefined value" - VueJS

I'm currently working on implementing a basic authentication system in vuejs. I have a set of objects containing valid usernames and passwords. I am looping through this list to validate the entered username and password. If there is a match, I trigge ...